Struct wasm_bindgen::JsValue

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pub struct JsValue { /* private fields */ }
Expand description

Representation of an object owned by JS.

A JsValue doesn’t actually live in Rust right now but actually in a table owned by the wasm-bindgen generated JS glue code. Eventually the ownership will transfer into wasm directly and this will likely become more efficient, but for now it may be slightly slow.

Implementations§

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impl JsValue

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pub const NULL: JsValue = _

The null JS value constant.

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pub const UNDEFINED: JsValue = _

The undefined JS value constant.

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pub const TRUE: JsValue = _

The true JS value constant.

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pub const FALSE: JsValue = _

The false JS value constant.

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pub fn from_str(s: &str) -> JsValue

Creates a new JS value which is a string.

The utf-8 string provided is copied to the JS heap and the string will be owned by the JS garbage collector.

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pub fn from_f64(n: f64) -> JsValue

Creates a new JS value which is a number.

This function creates a JS value representing a number (a heap allocated number) and returns a handle to the JS version of it.

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pub fn bigint_from_str(s: &str) -> JsValue

Creates a new JS value which is a bigint from a string representing a number.

This function creates a JS value representing a bigint (a heap allocated large integer) and returns a handle to the JS version of it.

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pub const fn from_bool(b: bool) -> JsValue

Creates a new JS value which is a boolean.

This function creates a JS object representing a boolean (a heap allocated boolean) and returns a handle to the JS version of it.

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pub const fn undefined() -> JsValue

Creates a new JS value representing undefined.

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pub const fn null() -> JsValue

Creates a new JS value representing null.

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pub fn symbol(description: Option<&str>) -> JsValue

Creates a new JS symbol with the optional description specified.

This function will invoke the Symbol constructor in JS and return the JS object corresponding to the symbol created.

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pub fn as_f64(&self) -> Option<f64>

Returns the f64 value of this JS value if it’s an instance of a number.

If this JS value is not an instance of a number then this returns None.

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pub fn is_string(&self) -> bool

Tests whether this JS value is a JS string.

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pub fn as_string(&self) -> Option<String>

If this JS value is a string value, this function copies the JS string value into wasm linear memory, encoded as UTF-8, and returns it as a Rust String.

To avoid the copying and re-encoding, consider the JsString::try_from() function from js-sys instead.

If this JS value is not an instance of a string or if it’s not valid utf-8 then this returns None.

UTF-16 vs UTF-8

JavaScript strings in general are encoded as UTF-16, but Rust strings are encoded as UTF-8. This can cause the Rust string to look a bit different than the JS string sometimes. For more details see the documentation about the str type which contains a few caveats about the encodings.

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pub fn as_bool(&self) -> Option<bool>

Returns the bool value of this JS value if it’s an instance of a boolean.

If this JS value is not an instance of a boolean then this returns None.

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pub fn is_null(&self) -> bool

Tests whether this JS value is null

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pub fn is_undefined(&self) -> bool

Tests whether this JS value is undefined

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pub fn is_symbol(&self) -> bool

Tests whether the type of this JS value is symbol

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pub fn is_object(&self) -> bool

Tests whether typeof self == "object" && self !== null.

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pub fn is_array(&self) -> bool

Tests whether this JS value is an instance of Array.

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pub fn is_function(&self) -> bool

Tests whether the type of this JS value is function.

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pub fn is_bigint(&self) -> bool

Tests whether the type of this JS value is bigint.

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pub fn js_typeof(&self) -> JsValue

Applies the unary typeof JS operator on a JsValue.

MDN documentation

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pub fn js_in(&self, obj: &JsValue) -> bool

Applies the binary in JS operator on the two JsValues.

MDN documentation

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pub fn is_truthy(&self) -> bool

Tests whether the value is “truthy”.

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pub fn is_falsy(&self) -> bool

Tests whether the value is “falsy”.

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pub fn loose_eq(&self, other: &Self) -> bool

Compare two JsValues for equality, using the == operator in JS.

MDN documentation

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pub fn bit_not(&self) -> JsValue

Applies the unary ~ JS operator on a JsValue.

MDN documentation

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pub fn unsigned_shr(&self, rhs: &Self) -> u32

Applies the binary >>> JS operator on the two JsValues.

MDN documentation

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pub fn checked_div(&self, rhs: &Self) -> Self

Applies the binary / JS operator on two JsValues, catching and returning any RangeError thrown.

MDN documentation

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pub fn pow(&self, rhs: &Self) -> Self

Applies the binary ** JS operator on the two JsValues.

MDN documentation

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pub fn lt(&self, other: &Self) -> bool

Applies the binary < JS operator on the two JsValues.

MDN documentation

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pub fn le(&self, other: &Self) -> bool

Applies the binary <= JS operator on the two JsValues.

MDN documentation

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pub fn ge(&self, other: &Self) -> bool

Applies the binary >= JS operator on the two JsValues.

MDN documentation

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pub fn gt(&self, other: &Self) -> bool

Applies the binary > JS operator on the two JsValues.

MDN documentation

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pub fn unchecked_into_f64(&self) -> f64

Applies the unary + JS operator on a JsValue. Can throw.

MDN documentation

Trait Implementations§

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impl Add<&JsValue> for JsValue

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type Output = <&'static JsValue as Add<&'static JsValue>>::Output

The resulting type after applying the + operator.
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fn add( self, other: &JsValue ) -> <&'static JsValue as Add<&'static JsValue>>::Output

Performs the + operation. Read more
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impl<'a> Add<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Add<&'static JsValue>>::Output

The resulting type after applying the + operator.
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fn add( self, other: JsValue ) -> <&'static JsValue as Add<&'static JsValue>>::Output

Performs the + operation. Read more
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impl Add<&JsValue> for &JsValue

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fn add(self, rhs: Self) -> Self::Output

Applies the binary + JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the + operator.
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impl Add<JsValue> for JsValue

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type Output = <&'static JsValue as Add<&'static JsValue>>::Output

The resulting type after applying the + operator.
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fn add( self, other: JsValue ) -> <&'static JsValue as Add<&'static JsValue>>::Output

Performs the + operation. Read more
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impl<T: ?Sized> AsRef<JsValue> for Closure<T>

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fn as_ref(&self) -> &JsValue

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<JsValue> for JsValue

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fn as_ref(&self) -> &JsValue

Converts this type into a shared reference of the (usually inferred) input type.
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impl BitAnd<&JsValue> for JsValue

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type Output = <&'static JsValue as BitAnd<&'static JsValue>>::Output

The resulting type after applying the & operator.
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fn bitand( self, other: &JsValue ) -> <&'static JsValue as BitAnd<&'static JsValue>>::Output

Performs the & operation. Read more
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impl<'a> BitAnd<JsValue> for &'a JsValue

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type Output = <&'static JsValue as BitAnd<&'static JsValue>>::Output

The resulting type after applying the & operator.
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fn bitand( self, other: JsValue ) -> <&'static JsValue as BitAnd<&'static JsValue>>::Output

Performs the & operation. Read more
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impl BitAnd<&JsValue> for &JsValue

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fn bitand(self, rhs: Self) -> Self::Output

Applies the binary & JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the & operator.
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impl BitAnd<JsValue> for JsValue

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type Output = <&'static JsValue as BitAnd<&'static JsValue>>::Output

The resulting type after applying the & operator.
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fn bitand( self, other: JsValue ) -> <&'static JsValue as BitAnd<&'static JsValue>>::Output

Performs the & operation. Read more
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impl BitOr<&JsValue> for JsValue

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type Output = <&'static JsValue as BitOr<&'static JsValue>>::Output

The resulting type after applying the | operator.
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fn bitor( self, other: &JsValue ) -> <&'static JsValue as BitOr<&'static JsValue>>::Output

Performs the | operation. Read more
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impl<'a> BitOr<JsValue> for &'a JsValue

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type Output = <&'static JsValue as BitOr<&'static JsValue>>::Output

The resulting type after applying the | operator.
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fn bitor( self, other: JsValue ) -> <&'static JsValue as BitOr<&'static JsValue>>::Output

Performs the | operation. Read more
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impl BitOr<&JsValue> for &JsValue

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fn bitor(self, rhs: Self) -> Self::Output

Applies the binary | JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the | operator.
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impl BitOr<JsValue> for JsValue

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type Output = <&'static JsValue as BitOr<&'static JsValue>>::Output

The resulting type after applying the | operator.
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fn bitor( self, other: JsValue ) -> <&'static JsValue as BitOr<&'static JsValue>>::Output

Performs the | operation. Read more
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impl BitXor<&JsValue> for JsValue

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type Output = <&'static JsValue as BitXor<&'static JsValue>>::Output

The resulting type after applying the ^ operator.
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fn bitxor( self, other: &JsValue ) -> <&'static JsValue as BitXor<&'static JsValue>>::Output

Performs the ^ operation. Read more
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impl<'a> BitXor<JsValue> for &'a JsValue

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type Output = <&'static JsValue as BitXor<&'static JsValue>>::Output

The resulting type after applying the ^ operator.
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fn bitxor( self, other: JsValue ) -> <&'static JsValue as BitXor<&'static JsValue>>::Output

Performs the ^ operation. Read more
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impl BitXor<&JsValue> for &JsValue

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fn bitxor(self, rhs: Self) -> Self::Output

Applies the binary ^ JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the ^ operator.
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impl BitXor<JsValue> for JsValue

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type Output = <&'static JsValue as BitXor<&'static JsValue>>::Output

The resulting type after applying the ^ operator.
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fn bitxor( self, other: JsValue ) -> <&'static JsValue as BitXor<&'static JsValue>>::Output

Performs the ^ operation. Read more
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impl Clone for JsValue

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fn clone(&self) -> JsValue

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for JsValue

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for JsValue

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Div<&JsValue> for JsValue

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type Output = <&'static JsValue as Div<&'static JsValue>>::Output

The resulting type after applying the / operator.
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fn div( self, other: &JsValue ) -> <&'static JsValue as Div<&'static JsValue>>::Output

Performs the / operation. Read more
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impl<'a> Div<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Div<&'static JsValue>>::Output

The resulting type after applying the / operator.
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fn div( self, other: JsValue ) -> <&'static JsValue as Div<&'static JsValue>>::Output

Performs the / operation. Read more
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impl Div<&JsValue> for &JsValue

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fn div(self, rhs: Self) -> Self::Output

Applies the binary / JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the / operator.
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impl Div<JsValue> for JsValue

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type Output = <&'static JsValue as Div<&'static JsValue>>::Output

The resulting type after applying the / operator.
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fn div( self, other: JsValue ) -> <&'static JsValue as Div<&'static JsValue>>::Output

Performs the / operation. Read more
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impl Drop for JsValue

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<'a> From<&'a String> for JsValue

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fn from(s: &'a String) -> JsValue

Converts to this type from the input type.
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impl<'a, T> From<&'a T> for JsValuewhere T: JsCast,

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fn from(s: &'a T) -> JsValue

Converts to this type from the input type.
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impl<'a> From<&'a str> for JsValue

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fn from(s: &'a str) -> JsValue

Converts to this type from the input type.
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impl<T> From<*const T> for JsValue

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fn from(s: *const T) -> JsValue

Converts to this type from the input type.
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impl<T> From<*mut T> for JsValue

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fn from(s: *mut T) -> JsValue

Converts to this type from the input type.
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impl From<JsError> for JsValue

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fn from(error: JsError) -> Self

Converts to this type from the input type.
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impl<T> From<Option<T>> for JsValuewhere JsValue: From<T>,

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fn from(s: Option<T>) -> JsValue

Converts to this type from the input type.
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impl From<String> for JsValue

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fn from(s: String) -> JsValue

Converts to this type from the input type.
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impl From<bool> for JsValue

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fn from(s: bool) -> JsValue

Converts to this type from the input type.
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impl From<f32> for JsValue

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fn from(n: f32) -> JsValue

Converts to this type from the input type.
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impl From<f64> for JsValue

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fn from(n: f64) -> JsValue

Converts to this type from the input type.
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impl From<i128> for JsValue

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fn from(n: i128) -> JsValue

Converts to this type from the input type.
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impl From<i16> for JsValue

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fn from(n: i16) -> JsValue

Converts to this type from the input type.
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impl From<i32> for JsValue

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fn from(n: i32) -> JsValue

Converts to this type from the input type.
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impl From<i64> for JsValue

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fn from(n: i64) -> JsValue

Converts to this type from the input type.
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impl From<i8> for JsValue

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fn from(n: i8) -> JsValue

Converts to this type from the input type.
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impl From<isize> for JsValue

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fn from(n: isize) -> Self

Converts to this type from the input type.
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impl From<u128> for JsValue

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fn from(n: u128) -> JsValue

Converts to this type from the input type.
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impl From<u16> for JsValue

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fn from(n: u16) -> JsValue

Converts to this type from the input type.
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impl From<u32> for JsValue

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fn from(n: u32) -> JsValue

Converts to this type from the input type.
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impl From<u64> for JsValue

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fn from(n: u64) -> JsValue

Converts to this type from the input type.
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impl From<u8> for JsValue

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fn from(n: u8) -> JsValue

Converts to this type from the input type.
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impl From<usize> for JsValue

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fn from(n: usize) -> Self

Converts to this type from the input type.
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impl FromWasmAbi for JsValue

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type Abi = u32

The wasm ABI type that this converts from when coming back out from the ABI boundary.
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unsafe fn from_abi(js: u32) -> JsValue

Recover a Self from Self::Abi. Read more
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impl<'a> IntoWasmAbi for &'a JsValue

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type Abi = u32

The wasm ABI type that this converts into when crossing the ABI boundary.
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fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.
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impl IntoWasmAbi for JsValue

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type Abi = u32

The wasm ABI type that this converts into when crossing the ABI boundary.
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fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.
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impl JsCast for JsValue

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fn instanceof(_val: &JsValue) -> bool

Performs a dynamic instanceof check to see whether the JsValue provided is an instance of this type. Read more
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fn unchecked_from_js(val: JsValue) -> Self

Performs a zero-cost unchecked conversion from a JsValue into an instance of Self Read more
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fn unchecked_from_js_ref(val: &JsValue) -> &Self

Performs a zero-cost unchecked conversion from a &JsValue into an instance of &Self. Read more
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fn has_type<T>(&self) -> boolwhere T: JsCast,

Test whether this JS value has a type T. Read more
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fn dyn_into<T>(self) -> Result<T, Self>where T: JsCast,

Performs a dynamic cast (checked at runtime) of this value into the target type T. Read more
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fn dyn_ref<T>(&self) -> Option<&T>where T: JsCast,

Performs a dynamic cast (checked at runtime) of this value into the target type T. Read more
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fn unchecked_into<T>(self) -> Twhere T: JsCast,

Performs a zero-cost unchecked cast into the specified type. Read more
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fn unchecked_ref<T>(&self) -> &Twhere T: JsCast,

Performs a zero-cost unchecked cast into a reference to the specified type. Read more
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fn is_instance_of<T>(&self) -> boolwhere T: JsCast,

Test whether this JS value is an instance of the type T. Read more
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fn is_type_of(val: &JsValue) -> bool

Performs a dynamic check to see whether the JsValue provided is a value of this type. Read more
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impl LongRefFromWasmAbi for JsValue

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type Abi = u32

Same as RefFromWasmAbi::Abi
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type Anchor = JsValue

Same as RefFromWasmAbi::Anchor
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unsafe fn long_ref_from_abi(js: u32) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi
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impl Mul<&JsValue> for JsValue

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type Output = <&'static JsValue as Mul<&'static JsValue>>::Output

The resulting type after applying the * operator.
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fn mul( self, other: &JsValue ) -> <&'static JsValue as Mul<&'static JsValue>>::Output

Performs the * operation. Read more
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impl<'a> Mul<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Mul<&'static JsValue>>::Output

The resulting type after applying the * operator.
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fn mul( self, other: JsValue ) -> <&'static JsValue as Mul<&'static JsValue>>::Output

Performs the * operation. Read more
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impl Mul<&JsValue> for &JsValue

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fn mul(self, rhs: Self) -> Self::Output

Applies the binary * JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the * operator.
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impl Mul<JsValue> for JsValue

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type Output = <&'static JsValue as Mul<&'static JsValue>>::Output

The resulting type after applying the * operator.
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fn mul( self, other: JsValue ) -> <&'static JsValue as Mul<&'static JsValue>>::Output

Performs the * operation. Read more
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impl Neg for &JsValue

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fn neg(self) -> Self::Output

Applies the unary - JS operator on a JsValue.

MDN documentation

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type Output = JsValue

The resulting type after applying the - operator.
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impl Neg for JsValue

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type Output = <&'static JsValue as Neg>::Output

The resulting type after applying the - operator.
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fn neg(self) -> <&'static JsValue as Neg>::Output

Performs the unary - operation. Read more
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impl Not for &JsValue

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fn not(self) -> Self::Output

Applies the ! JS operator on a JsValue.

MDN documentation

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type Output = bool

The resulting type after applying the ! operator.
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impl Not for JsValue

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type Output = <&'static JsValue as Not>::Output

The resulting type after applying the ! operator.
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fn not(self) -> <&'static JsValue as Not>::Output

Performs the unary ! operation. Read more
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impl<'a> PartialEq<&'a String> for JsValue

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fn eq(&self, other: &&'a String) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> PartialEq<&'a str> for JsValue

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fn eq(&self, other: &&'a str) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<String> for JsValue

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fn eq(&self, other: &String) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<bool> for JsValue

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fn eq(&self, other: &bool) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<f32> for JsValue

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fn eq(&self, other: &f32) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<f64> for JsValue

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fn eq(&self, other: &f64) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<i128> for JsValue

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fn eq(&self, other: &i128) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<i16> for JsValue

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fn eq(&self, other: &i16) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<i32> for JsValue

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fn eq(&self, other: &i32) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<i64> for JsValue

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fn eq(&self, other: &i64) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<i8> for JsValue

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fn eq(&self, other: &i8) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<isize> for JsValue

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fn eq(&self, other: &isize) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<str> for JsValue

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fn eq(&self, other: &str) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<u128> for JsValue

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fn eq(&self, other: &u128) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<u16> for JsValue

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fn eq(&self, other: &u16) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<u32> for JsValue

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fn eq(&self, other: &u32) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<u64> for JsValue

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fn eq(&self, other: &u64) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<u8> for JsValue

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fn eq(&self, other: &u8) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<usize> for JsValue

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fn eq(&self, other: &usize) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<JsValue> for JsValue

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fn eq(&self, other: &Self) -> bool

Compares two JsValues for equality, using the === operator in JS.

MDN documentation

1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl RefFromWasmAbi for JsValue

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type Abi = u32

The wasm ABI type references to Self are recovered from.
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type Anchor = ManuallyDrop<JsValue>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.
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unsafe fn ref_from_abi(js: u32) -> Self::Anchor

Recover a Self::Anchor from Self::Abi. Read more
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impl Rem<&JsValue> for JsValue

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type Output = <&'static JsValue as Rem<&'static JsValue>>::Output

The resulting type after applying the % operator.
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fn rem( self, other: &JsValue ) -> <&'static JsValue as Rem<&'static JsValue>>::Output

Performs the % operation. Read more
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impl<'a> Rem<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Rem<&'static JsValue>>::Output

The resulting type after applying the % operator.
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fn rem( self, other: JsValue ) -> <&'static JsValue as Rem<&'static JsValue>>::Output

Performs the % operation. Read more
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impl Rem<&JsValue> for &JsValue

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fn rem(self, rhs: Self) -> Self::Output

Applies the binary % JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the % operator.
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impl Rem<JsValue> for JsValue

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type Output = <&'static JsValue as Rem<&'static JsValue>>::Output

The resulting type after applying the % operator.
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fn rem( self, other: JsValue ) -> <&'static JsValue as Rem<&'static JsValue>>::Output

Performs the % operation. Read more
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impl Shl<&JsValue> for JsValue

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type Output = <&'static JsValue as Shl<&'static JsValue>>::Output

The resulting type after applying the << operator.
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fn shl( self, other: &JsValue ) -> <&'static JsValue as Shl<&'static JsValue>>::Output

Performs the << operation. Read more
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impl<'a> Shl<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Shl<&'static JsValue>>::Output

The resulting type after applying the << operator.
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fn shl( self, other: JsValue ) -> <&'static JsValue as Shl<&'static JsValue>>::Output

Performs the << operation. Read more
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impl Shl<&JsValue> for &JsValue

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fn shl(self, rhs: Self) -> Self::Output

Applies the binary << JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the << operator.
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impl Shl<JsValue> for JsValue

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type Output = <&'static JsValue as Shl<&'static JsValue>>::Output

The resulting type after applying the << operator.
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fn shl( self, other: JsValue ) -> <&'static JsValue as Shl<&'static JsValue>>::Output

Performs the << operation. Read more
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impl Shr<&JsValue> for JsValue

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type Output = <&'static JsValue as Shr<&'static JsValue>>::Output

The resulting type after applying the >> operator.
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fn shr( self, other: &JsValue ) -> <&'static JsValue as Shr<&'static JsValue>>::Output

Performs the >> operation. Read more
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impl<'a> Shr<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Shr<&'static JsValue>>::Output

The resulting type after applying the >> operator.
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fn shr( self, other: JsValue ) -> <&'static JsValue as Shr<&'static JsValue>>::Output

Performs the >> operation. Read more
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impl Shr<&JsValue> for &JsValue

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fn shr(self, rhs: Self) -> Self::Output

Applies the binary >> JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the >> operator.
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impl Shr<JsValue> for JsValue

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type Output = <&'static JsValue as Shr<&'static JsValue>>::Output

The resulting type after applying the >> operator.
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fn shr( self, other: JsValue ) -> <&'static JsValue as Shr<&'static JsValue>>::Output

Performs the >> operation. Read more
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impl Sub<&JsValue> for JsValue

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type Output = <&'static JsValue as Sub<&'static JsValue>>::Output

The resulting type after applying the - operator.
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fn sub( self, other: &JsValue ) -> <&'static JsValue as Sub<&'static JsValue>>::Output

Performs the - operation. Read more
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impl<'a> Sub<JsValue> for &'a JsValue

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type Output = <&'static JsValue as Sub<&'static JsValue>>::Output

The resulting type after applying the - operator.
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fn sub( self, other: JsValue ) -> <&'static JsValue as Sub<&'static JsValue>>::Output

Performs the - operation. Read more
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impl Sub<&JsValue> for &JsValue

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fn sub(self, rhs: Self) -> Self::Output

Applies the binary - JS operator on two JsValues.

MDN documentation

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type Output = JsValue

The resulting type after applying the - operator.
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impl Sub<JsValue> for JsValue

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type Output = <&'static JsValue as Sub<&'static JsValue>>::Output

The resulting type after applying the - operator.
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fn sub( self, other: JsValue ) -> <&'static JsValue as Sub<&'static JsValue>>::Output

Performs the - operation. Read more
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impl TryFrom<&JsValue> for f64

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fn try_from(val: &JsValue) -> Result<Self, Self::Error>

Applies the unary + JS operator on a JsValue. Returns the numeric result on success, or the JS error value on error.

MDN documentation

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type Error = JsValue

The type returned in the event of a conversion error.
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impl TryFrom<JsValue> for f64

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fn try_from(val: JsValue) -> Result<Self, Self::Error>

Applies the unary + JS operator on a JsValue. Returns the numeric result on success, or the JS error value on error.

MDN documentation

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type Error = JsValue

The type returned in the event of a conversion error.
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impl TryFrom<JsValue> for i128

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type Error = JsValue

The type returned in the event of a conversion error.
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fn try_from(v: JsValue) -> Result<Self, JsValue>

Performs the conversion.
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impl TryFrom<JsValue> for i64

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type Error = JsValue

The type returned in the event of a conversion error.
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fn try_from(v: JsValue) -> Result<Self, JsValue>

Performs the conversion.
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impl TryFrom<JsValue> for u128

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type Error = JsValue

The type returned in the event of a conversion error.
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fn try_from(v: JsValue) -> Result<Self, JsValue>

Performs the conversion.
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impl TryFrom<JsValue> for u64

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type Error = JsValue

The type returned in the event of a conversion error.
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fn try_from(v: JsValue) -> Result<Self, JsValue>

Performs the conversion.

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ReturnWasmAbi for Twhere T: IntoWasmAbi,

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type Abi = <T as IntoWasmAbi>::Abi

Same as IntoWasmAbi::Abi
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fn return_abi(self) -> <T as ReturnWasmAbi>::Abi

Same as IntoWasmAbi::into_abi, except that it may throw and never return in the case of Err.
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.