pub struct Object { /* private fields */ }
Expand description
Implementations§
source§impl Object
impl Object
sourcepub fn constructor(&self) -> Function
pub fn constructor(&self) -> Function
The constructor property returns a reference to the Object
constructor
function that created the instance object.
source§impl Object
impl Object
source§impl Object
impl Object
source§impl Object
impl Object
sourcepub fn define_properties(obj: &Object, props: &Object) -> Object
pub fn define_properties(obj: &Object, props: &Object) -> Object
The Object.defineProperties()
method defines new or modifies
existing properties directly on an object, returning the
object.
source§impl Object
impl Object
sourcepub fn entries(object: &Object) -> Array
pub fn entries(object: &Object) -> Array
The Object.entries()
method returns an array of a given
object’s own enumerable property [key, value] pairs, in the
same order as that provided by a for…in loop (the difference
being that a for-in loop enumerates properties in the
prototype chain as well).
source§impl Object
impl Object
sourcepub fn freeze(value: &Object) -> Object
pub fn freeze(value: &Object) -> Object
The Object.freeze()
method freezes an object: that is, prevents new
properties from being added to it; prevents existing properties from
being removed; and prevents existing properties, or their enumerability,
configurability, or writability, from being changed, it also prevents
the prototype from being changed. The method returns the passed object.
source§impl Object
impl Object
source§impl Object
impl Object
sourcepub fn get_own_property_descriptor(obj: &Object, prop: &JsValue) -> JsValue
pub fn get_own_property_descriptor(obj: &Object, prop: &JsValue) -> JsValue
The Object.getOwnPropertyDescriptor()
method returns a
property descriptor for an own property (that is, one directly
present on an object and not in the object’s prototype chain)
of a given object.
source§impl Object
impl Object
sourcepub fn get_own_property_descriptors(obj: &Object) -> JsValue
pub fn get_own_property_descriptors(obj: &Object) -> JsValue
The Object.getOwnPropertyDescriptors()
method returns all own
property descriptors of a given object.
source§impl Object
impl Object
sourcepub fn get_own_property_names(obj: &Object) -> Array
pub fn get_own_property_names(obj: &Object) -> Array
The Object.getOwnPropertyNames()
method returns an array of
all properties (including non-enumerable properties except for
those which use Symbol) found directly upon a given object.
source§impl Object
impl Object
sourcepub fn get_own_property_symbols(obj: &Object) -> Array
pub fn get_own_property_symbols(obj: &Object) -> Array
The Object.getOwnPropertySymbols()
method returns an array of
all symbol properties found directly upon a given object.
source§impl Object
impl Object
sourcepub fn get_prototype_of(obj: &JsValue) -> Object
pub fn get_prototype_of(obj: &JsValue) -> Object
The Object.getPrototypeOf()
method returns the prototype
(i.e. the value of the internal [[Prototype]] property) of the
specified object.
source§impl Object
impl Object
sourcepub fn has_own_property(&self, property: &JsValue) -> bool
pub fn has_own_property(&self, property: &JsValue) -> bool
The hasOwnProperty()
method returns a boolean indicating whether the
object has the specified property as its own property (as opposed to
inheriting it).
source§impl Object
impl Object
sourcepub fn is_extensible(object: &Object) -> bool
pub fn is_extensible(object: &Object) -> bool
The Object.isExtensible()
method determines if an object is extensible
(whether it can have new properties added to it).
source§impl Object
impl Object
source§impl Object
impl Object
source§impl Object
impl Object
sourcepub fn is_prototype_of(&self, value: &JsValue) -> bool
pub fn is_prototype_of(&self, value: &JsValue) -> bool
The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
source§impl Object
impl Object
source§impl Object
impl Object
sourcepub fn prevent_extensions(object: &Object)
pub fn prevent_extensions(object: &Object)
The Object.preventExtensions()
method prevents new properties from
ever being added to an object (i.e. prevents future extensions to the
object).
source§impl Object
impl Object
sourcepub fn property_is_enumerable(&self, property: &JsValue) -> bool
pub fn property_is_enumerable(&self, property: &JsValue) -> bool
The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
source§impl Object
impl Object
source§impl Object
impl Object
sourcepub fn set_prototype_of(object: &Object, prototype: &Object) -> Object
pub fn set_prototype_of(object: &Object, prototype: &Object) -> Object
The Object.setPrototypeOf()
method sets the prototype (i.e., the
internal [[Prototype]]
property) of a specified object to another
object or null
.
source§impl Object
impl Object
sourcepub fn to_locale_string(&self) -> JsString
pub fn to_locale_string(&self) -> JsString
The toLocaleString()
method returns a string representing the object.
This method is meant to be overridden by derived objects for
locale-specific purposes.
source§impl Object
impl Object
source§impl Object
impl Object
source§impl Object
impl Object
Methods from Deref<Target = JsValue>§
pub const NULL: JsValue = _
pub const UNDEFINED: JsValue = _
pub const TRUE: JsValue = _
pub const FALSE: JsValue = _
sourcepub fn as_f64(&self) -> Option<f64>
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
.
sourcepub fn as_string(&self) -> Option<String>
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.
sourcepub fn as_bool(&self) -> Option<bool>
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
.
sourcepub fn is_undefined(&self) -> bool
pub fn is_undefined(&self) -> bool
Tests whether this JS value is undefined
sourcepub fn is_function(&self) -> bool
pub fn is_function(&self) -> bool
Tests whether the type of this JS value is function
.
sourcepub fn js_in(&self, obj: &JsValue) -> bool
pub fn js_in(&self, obj: &JsValue) -> bool
Applies the binary in
JS operator on the two JsValue
s.
sourcepub fn loose_eq(&self, other: &JsValue) -> bool
pub fn loose_eq(&self, other: &JsValue) -> bool
Compare two JsValue
s for equality, using the ==
operator in JS.
sourcepub fn unsigned_shr(&self, rhs: &JsValue) -> u32
pub fn unsigned_shr(&self, rhs: &JsValue) -> u32
Applies the binary >>>
JS operator on the two JsValue
s.
sourcepub fn checked_div(&self, rhs: &JsValue) -> JsValue
pub fn checked_div(&self, rhs: &JsValue) -> JsValue
Applies the binary /
JS operator on two JsValue
s, catching and returning any RangeError
thrown.
sourcepub fn pow(&self, rhs: &JsValue) -> JsValue
pub fn pow(&self, rhs: &JsValue) -> JsValue
Applies the binary **
JS operator on the two JsValue
s.
sourcepub fn lt(&self, other: &JsValue) -> bool
pub fn lt(&self, other: &JsValue) -> bool
Applies the binary <
JS operator on the two JsValue
s.
sourcepub fn le(&self, other: &JsValue) -> bool
pub fn le(&self, other: &JsValue) -> bool
Applies the binary <=
JS operator on the two JsValue
s.
sourcepub fn ge(&self, other: &JsValue) -> bool
pub fn ge(&self, other: &JsValue) -> bool
Applies the binary >=
JS operator on the two JsValue
s.
sourcepub fn gt(&self, other: &JsValue) -> bool
pub fn gt(&self, other: &JsValue) -> bool
Applies the binary >
JS operator on the two JsValue
s.
sourcepub fn unchecked_into_f64(&self) -> f64
pub fn unchecked_into_f64(&self) -> f64
Applies the unary +
JS operator on a JsValue
. Can throw.
Trait Implementations§
source§impl AsRef<Object> for ArrayBuffer
impl AsRef<Object> for ArrayBuffer
source§impl AsRef<Object> for BigInt64Array
impl AsRef<Object> for BigInt64Array
source§impl AsRef<Object> for BigUint64Array
impl AsRef<Object> for BigUint64Array
source§impl AsRef<Object> for DateTimeFormat
impl AsRef<Object> for DateTimeFormat
source§impl AsRef<Object> for Float32Array
impl AsRef<Object> for Float32Array
source§impl AsRef<Object> for Float64Array
impl AsRef<Object> for Float64Array
source§impl AsRef<Object> for Int16Array
impl AsRef<Object> for Int16Array
source§impl AsRef<Object> for Int32Array
impl AsRef<Object> for Int32Array
source§impl AsRef<Object> for IteratorNext
impl AsRef<Object> for IteratorNext
source§impl AsRef<Object> for NumberFormat
impl AsRef<Object> for NumberFormat
source§impl AsRef<Object> for PluralRules
impl AsRef<Object> for PluralRules
source§impl AsRef<Object> for RangeError
impl AsRef<Object> for RangeError
source§impl AsRef<Object> for ReferenceError
impl AsRef<Object> for ReferenceError
source§impl AsRef<Object> for RelativeTimeFormat
impl AsRef<Object> for RelativeTimeFormat
source§impl AsRef<Object> for SyntaxError
impl AsRef<Object> for SyntaxError
source§impl AsRef<Object> for Uint16Array
impl AsRef<Object> for Uint16Array
source§impl AsRef<Object> for Uint32Array
impl AsRef<Object> for Uint32Array
source§impl AsRef<Object> for Uint8Array
impl AsRef<Object> for Uint8Array
source§impl AsRef<Object> for Uint8ClampedArray
impl AsRef<Object> for Uint8ClampedArray
source§impl From<ArrayBuffer> for Object
impl From<ArrayBuffer> for Object
source§fn from(obj: ArrayBuffer) -> Object
fn from(obj: ArrayBuffer) -> Object
source§impl From<BigInt64Array> for Object
impl From<BigInt64Array> for Object
source§fn from(obj: BigInt64Array) -> Object
fn from(obj: BigInt64Array) -> Object
source§impl From<BigUint64Array> for Object
impl From<BigUint64Array> for Object
source§fn from(obj: BigUint64Array) -> Object
fn from(obj: BigUint64Array) -> Object
source§impl From<DateTimeFormat> for Object
impl From<DateTimeFormat> for Object
source§fn from(obj: DateTimeFormat) -> Object
fn from(obj: DateTimeFormat) -> Object
source§impl From<Float32Array> for Object
impl From<Float32Array> for Object
source§fn from(obj: Float32Array) -> Object
fn from(obj: Float32Array) -> Object
source§impl From<Float64Array> for Object
impl From<Float64Array> for Object
source§fn from(obj: Float64Array) -> Object
fn from(obj: Float64Array) -> Object
source§impl From<Int16Array> for Object
impl From<Int16Array> for Object
source§fn from(obj: Int16Array) -> Object
fn from(obj: Int16Array) -> Object
source§impl From<Int32Array> for Object
impl From<Int32Array> for Object
source§fn from(obj: Int32Array) -> Object
fn from(obj: Int32Array) -> Object
source§impl From<IteratorNext> for Object
impl From<IteratorNext> for Object
source§fn from(obj: IteratorNext) -> Object
fn from(obj: IteratorNext) -> Object
source§impl From<NumberFormat> for Object
impl From<NumberFormat> for Object
source§fn from(obj: NumberFormat) -> Object
fn from(obj: NumberFormat) -> Object
source§impl From<PluralRules> for Object
impl From<PluralRules> for Object
source§fn from(obj: PluralRules) -> Object
fn from(obj: PluralRules) -> Object
source§impl From<RangeError> for Object
impl From<RangeError> for Object
source§fn from(obj: RangeError) -> Object
fn from(obj: RangeError) -> Object
source§impl From<ReferenceError> for Object
impl From<ReferenceError> for Object
source§fn from(obj: ReferenceError) -> Object
fn from(obj: ReferenceError) -> Object
source§impl From<RelativeTimeFormat> for Object
impl From<RelativeTimeFormat> for Object
source§fn from(obj: RelativeTimeFormat) -> Object
fn from(obj: RelativeTimeFormat) -> Object
source§fn from(obj: SharedArrayBuffer) -> Object
fn from(obj: SharedArrayBuffer) -> Object
source§impl From<SyntaxError> for Object
impl From<SyntaxError> for Object
source§fn from(obj: SyntaxError) -> Object
fn from(obj: SyntaxError) -> Object
source§impl From<Uint16Array> for Object
impl From<Uint16Array> for Object
source§fn from(obj: Uint16Array) -> Object
fn from(obj: Uint16Array) -> Object
source§impl From<Uint32Array> for Object
impl From<Uint32Array> for Object
source§fn from(obj: Uint32Array) -> Object
fn from(obj: Uint32Array) -> Object
source§impl From<Uint8Array> for Object
impl From<Uint8Array> for Object
source§fn from(obj: Uint8Array) -> Object
fn from(obj: Uint8Array) -> Object
source§impl From<Uint8ClampedArray> for Object
impl From<Uint8ClampedArray> for Object
source§fn from(obj: Uint8ClampedArray) -> Object
fn from(obj: Uint8ClampedArray) -> Object
source§impl FromWasmAbi for Object
impl FromWasmAbi for Object
source§impl<'a> IntoWasmAbi for &'a Object
impl<'a> IntoWasmAbi for &'a Object
source§impl IntoWasmAbi for Object
impl IntoWasmAbi for Object
source§impl JsCast for Object
impl JsCast for Object
source§fn instanceof(val: &JsValue) -> bool
fn instanceof(val: &JsValue) -> bool
instanceof
check to see whether the JsValue
provided is an instance of this type. Read moresource§fn unchecked_from_js(val: JsValue) -> Self
fn unchecked_from_js(val: JsValue) -> Self
source§fn unchecked_from_js_ref(val: &JsValue) -> &Self
fn unchecked_from_js_ref(val: &JsValue) -> &Self
source§fn has_type<T>(&self) -> boolwhere
T: JsCast,
fn has_type<T>(&self) -> boolwhere T: JsCast,
T
. Read moresource§fn dyn_into<T>(self) -> Result<T, Self>where
T: JsCast,
fn dyn_into<T>(self) -> Result<T, Self>where T: JsCast,
T
. Read moresource§fn dyn_ref<T>(&self) -> Option<&T>where
T: JsCast,
fn dyn_ref<T>(&self) -> Option<&T>where T: JsCast,
T
. Read moresource§fn unchecked_into<T>(self) -> Twhere
T: JsCast,
fn unchecked_into<T>(self) -> Twhere T: JsCast,
source§fn unchecked_ref<T>(&self) -> &Twhere
T: JsCast,
fn unchecked_ref<T>(&self) -> &Twhere T: JsCast,
source§impl LongRefFromWasmAbi for Object
impl LongRefFromWasmAbi for Object
source§impl OptionFromWasmAbi for Object
impl OptionFromWasmAbi for Object
source§impl<'a> OptionIntoWasmAbi for &'a Object
impl<'a> OptionIntoWasmAbi for &'a Object
source§impl OptionIntoWasmAbi for Object
impl OptionIntoWasmAbi for Object
source§impl PartialEq<Object> for Object
impl PartialEq<Object> for Object
source§impl RefFromWasmAbi for Object
impl RefFromWasmAbi for Object
§type Abi = <JsValue as RefFromWasmAbi>::Abi
type Abi = <JsValue as RefFromWasmAbi>::Abi
Self
are recovered from.§type Anchor = ManuallyDrop<Object>
type Anchor = ManuallyDrop<Object>
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.impl Eq for Object
Auto Trait Implementations§
impl RefUnwindSafe for Object
impl !Send for Object
impl !Sync for Object
impl Unpin for Object
impl UnwindSafe for Object
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> ReturnWasmAbi for Twhere
T: IntoWasmAbi,
impl<T> ReturnWasmAbi for Twhere T: IntoWasmAbi,
§type Abi = <T as IntoWasmAbi>::Abi
type Abi = <T as IntoWasmAbi>::Abi
IntoWasmAbi::Abi
source§fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
IntoWasmAbi::into_abi
, except that it may throw and never
return in the case of Err
.