[−][src]Struct js_sys::Object

#[repr(transparent)]pub struct Object { /* fields omitted */ }

Implementations

`impl Object`[src]

`pub fn assign(target: &Object, source: &Object) -> Object`[src]

The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.

MDN documentation

`impl Object`[src]

`pub fn assign2(target: &Object, source1: &Object, source2: &Object) -> Object`[src]

The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.

MDN documentation

`impl Object`[src]

`pub fn assign3( target: &Object, source1: &Object, source2: &Object, source3: &Object ) -> Object`[src]

The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.

MDN documentation

`impl Object`[src]

`pub fn constructor(&self) -> Function`[src]

The constructor property returns a reference to the Object constructor function that created the instance object.

MDN documentation

`impl Object`[src]

`pub fn create(prototype: &Object) -> Object`[src]

The Object.create() method creates a new object, using an existing object to provide the newly created object's prototype.

MDN documentation

`impl Object`[src]

`pub fn define_property( obj: &Object, prop: &JsValue, descriptor: &Object ) -> Object`[src]

The static method Object.defineProperty() defines a new property directly on an object, or modifies an existing property on an object, and returns the object.

MDN documentation

`impl Object`[src]

`pub fn define_properties(obj: &Object, props: &Object) -> Object`[src]

The Object.defineProperties() method defines new or modifies existing properties directly on an object, returning the object.

MDN documentation

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).

MDN documentation

`impl Object`[src]

`pub fn freeze(value: &Object) -> Object`[src]

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.

MDN documentation

`impl Object`[src]

`pub fn from_entries(iterable: &JsValue) -> Result<Object, JsValue>`[src]

The Object.fromEntries() method transforms a list of key-value pairs into an object.

MDN documentation

`impl Object`[src]

`pub fn get_own_property_descriptor(obj: &Object, prop: &JsValue) -> JsValue`[src]

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.

MDN documentation

`impl Object`[src]

`pub fn get_own_property_descriptors(obj: &Object) -> JsValue`[src]

The Object.getOwnPropertyDescriptors() method returns all own property descriptors of a given object.

MDN documentation

`impl Object`[src]

`pub fn get_own_property_names(obj: &Object) -> Array`[src]

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.

MDN documentation

`impl Object`[src]

`pub fn get_own_property_symbols(obj: &Object) -> Array`[src]

The Object.getOwnPropertySymbols() method returns an array of all symbol properties found directly upon a given object.

MDN documentation

`impl Object`[src]

`pub fn get_prototype_of(obj: &JsValue) -> Object`[src]

The Object.getPrototypeOf() method returns the prototype (i.e. the value of the internal [[Prototype]] property) of the specified object.

MDN documentation

`impl Object`[src]

`pub fn has_own_property(&self, property: &JsValue) -> bool`[src]

The hasOwnProperty() method returns a boolean indicating whether the object has the specified property as its own property (as opposed to inheriting it).

MDN documentation

`impl Object`[src]

`pub fn is(value_1: &JsValue, value_2: &JsValue) -> bool`[src]

The Object.is() method determines whether two values are the same value.

MDN documentation

`impl Object`[src]

`pub fn is_extensible(object: &Object) -> bool`[src]

The Object.isExtensible() method determines if an object is extensible (whether it can have new properties added to it).

MDN documentation

`impl Object`[src]

`pub fn is_frozen(object: &Object) -> bool`[src]

The Object.isFrozen() determines if an object is frozen.

MDN documentation

`impl Object`[src]

`pub fn is_sealed(object: &Object) -> bool`[src]

The Object.isSealed() method determines if an object is sealed.

MDN documentation

`impl Object`[src]

`pub fn is_prototype_of(&self, value: &JsValue) -> bool`[src]

The isPrototypeOf() method checks if an object exists in another object's prototype chain.

MDN documentation

`impl Object`[src]

`pub fn keys(object: &Object) -> Array`[src]

The Object.keys() method returns an array of a given object's property names, in the same order as we get with a normal loop.

MDN documentation

`impl Object`[src]

`pub fn new() -> Object`[src]

The Object constructor creates an object wrapper.

MDN documentation

`impl Object`[src]

`pub fn prevent_extensions(object: &Object)`[src]

The Object.preventExtensions() method prevents new properties from ever being added to an object (i.e. prevents future extensions to the object).

MDN documentation

`impl Object`[src]

`pub fn property_is_enumerable(&self, property: &JsValue) -> bool`[src]

The propertyIsEnumerable() method returns a Boolean indicating whether the specified property is enumerable.

MDN documentation

`impl Object`[src]

`pub fn seal(value: &Object) -> Object`[src]

The Object.seal() method seals an object, preventing new properties from being added to it and marking all existing properties as non-configurable. Values of present properties can still be changed as long as they are writable.

MDN documentation

`impl Object`[src]

`pub fn set_prototype_of(object: &Object, prototype: &Object) -> Object`[src]

The Object.setPrototypeOf() method sets the prototype (i.e., the internal [[Prototype]] property) of a specified object to another object or null.

MDN documentation

`impl Object`[src]

`pub fn to_locale_string(&self) -> JsString`[src]

The toLocaleString() method returns a string representing the object. This method is meant to be overridden by derived objects for locale-specific purposes.

MDN documentation

`impl Object`[src]

`pub fn to_string(&self) -> JsString`[src]

The toString() method returns a string representing the object.

MDN documentation

`impl Object`[src]

`pub fn value_of(&self) -> Object`[src]

The valueOf() method returns the primitive value of the specified object.

MDN documentation

`impl Object`[src]

`pub fn values(object: &Object) -> Array`[src]

The Object.values() method returns an array of a given object's own enumerable property values, 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).

MDN documentation

`impl Object`[src]

`pub fn try_from(val: &JsValue) -> Option<&Object>`[src]

Returns the Object value of this JS value if it's an instance of an object.

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

Methods from Deref<Target = JsValue>

`pub const NULL: JsValue`[src]

`pub const UNDEFINED: JsValue`[src]

`pub const TRUE: JsValue`[src]

`pub const FALSE: JsValue`[src]

`pub fn as_f64(&self) -> Option<f64>`[src]

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.

`pub fn is_string(&self) -> bool`[src]

Tests whether this JS value is a JS string.

`pub fn as_string(&self) -> Option<String>`[src]

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.

`pub fn as_bool(&self) -> Option<bool>`[src]

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.

`pub fn is_null(&self) -> bool`[src]

Tests whether this JS value is null

`pub fn is_undefined(&self) -> bool`[src]

Tests whether this JS value is undefined

`pub fn is_symbol(&self) -> bool`[src]

Tests whether the type of this JS value is symbol

`pub fn is_object(&self) -> bool`[src]

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

`pub fn is_function(&self) -> bool`[src]

Tests whether the type of this JS value is function.

`pub fn is_truthy(&self) -> bool`[src]

Tests whether the value is "truthy".

`pub fn is_falsy(&self) -> bool`[src]

Tests whether the value is "falsy".

[−][src]Struct js_sys::Object

Implementations

impl Object[src]

pub fn assign(target: &Object, source: &Object) -> Object[src]

impl Object[src]

pub fn assign2(target: &Object, source1: &Object, source2: &Object) -> Object[src]

impl Object[src]

pub fn assign3( target: &Object, source1: &Object, source2: &Object, source3: &Object) -> Object[src]

impl Object[src]

pub fn constructor(&self) -> Function[src]

impl Object[src]

pub fn create(prototype: &Object) -> Object[src]

impl Object[src]

pub fn define_property( obj: &Object, prop: &JsValue, descriptor: &Object) -> Object[src]

impl Object[src]

pub fn define_properties(obj: &Object, props: &Object) -> Object[src]

impl Object[src]

pub fn entries(object: &Object) -> Array[src]

impl Object[src]

pub fn freeze(value: &Object) -> Object[src]

impl Object[src]

pub fn from_entries(iterable: &JsValue) -> Result<Object, JsValue>[src]

impl Object[src]

pub fn get_own_property_descriptor(obj: &Object, prop: &JsValue) -> JsValue[src]

impl Object[src]

pub fn get_own_property_descriptors(obj: &Object) -> JsValue[src]

impl Object[src]

pub fn get_own_property_names(obj: &Object) -> Array[src]

impl Object[src]

pub fn get_own_property_symbols(obj: &Object) -> Array[src]

impl Object[src]

pub fn get_prototype_of(obj: &JsValue) -> Object[src]

impl Object[src]

pub fn has_own_property(&self, property: &JsValue) -> bool[src]

impl Object[src]

pub fn is(value_1: &JsValue, value_2: &JsValue) -> bool[src]

impl Object[src]

pub fn is_extensible(object: &Object) -> bool[src]

impl Object[src]

pub fn is_frozen(object: &Object) -> bool[src]

impl Object[src]

pub fn is_sealed(object: &Object) -> bool[src]

impl Object[src]

pub fn is_prototype_of(&self, value: &JsValue) -> bool[src]

impl Object[src]

pub fn keys(object: &Object) -> Array[src]

impl Object[src]

pub fn new() -> Object[src]

impl Object[src]

pub fn prevent_extensions(object: &Object)[src]

impl Object[src]

pub fn property_is_enumerable(&self, property: &JsValue) -> bool[src]

impl Object[src]

pub fn seal(value: &Object) -> Object[src]

impl Object[src]

pub fn set_prototype_of(object: &Object, prototype: &Object) -> Object[src]

impl Object[src]

pub fn to_locale_string(&self) -> JsString[src]

impl Object[src]

pub fn to_string(&self) -> JsString[src]

impl Object[src]

pub fn value_of(&self) -> Object[src]

impl Object[src]

pub fn values(object: &Object) -> Array[src]

impl Object[src]

pub fn try_from(val: &JsValue) -> Option<&Object>[src]

Methods from Deref<Target = JsValue>

pub const NULL: JsValue[src]

pub const UNDEFINED: JsValue[src]

pub const TRUE: JsValue[src]

pub const FALSE: JsValue[src]

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

pub fn is_string(&self) -> bool[src]

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

UTF-16 vs UTF-8

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

pub fn is_null(&self) -> bool[src]

pub fn is_undefined(&self) -> bool[src]

pub fn is_symbol(&self) -> bool[src]

pub fn is_object(&self) -> bool[src]

`impl Object`[src]

`pub fn assign(target: &Object, source: &Object) -> Object`[src]

`impl Object`[src]

`pub fn assign2(target: &Object, source1: &Object, source2: &Object) -> Object`[src]

`impl Object`[src]

`pub fn assign3( target: &Object, source1: &Object, source2: &Object, source3: &Object ) -> Object`[src]

`impl Object`[src]

`pub fn constructor(&self) -> Function`[src]

`impl Object`[src]

`pub fn create(prototype: &Object) -> Object`[src]

`impl Object`[src]

`pub fn define_property( obj: &Object, prop: &JsValue, descriptor: &Object ) -> Object`[src]

`impl Object`[src]

`pub fn define_properties(obj: &Object, props: &Object) -> Object`[src]

`impl Object`[src]

`pub fn entries(object: &Object) -> Array`[src]

`impl Object`[src]

`pub fn freeze(value: &Object) -> Object`[src]

`impl Object`[src]

`pub fn from_entries(iterable: &JsValue) -> Result<Object, JsValue>`[src]

`impl Object`[src]

`pub fn get_own_property_descriptor(obj: &Object, prop: &JsValue) -> JsValue`[src]

`impl Object`[src]

`pub fn get_own_property_descriptors(obj: &Object) -> JsValue`[src]

`impl Object`[src]

`pub fn get_own_property_names(obj: &Object) -> Array`[src]

`impl Object`[src]

`pub fn get_own_property_symbols(obj: &Object) -> Array`[src]

`impl Object`[src]

`pub fn get_prototype_of(obj: &JsValue) -> Object`[src]

`impl Object`[src]

`pub fn has_own_property(&self, property: &JsValue) -> bool`[src]

`impl Object`[src]

`pub fn is(value_1: &JsValue, value_2: &JsValue) -> bool`[src]

`impl Object`[src]

`pub fn is_extensible(object: &Object) -> bool`[src]

`impl Object`[src]

`pub fn is_frozen(object: &Object) -> bool`[src]

`impl Object`[src]

`pub fn is_sealed(object: &Object) -> bool`[src]

`impl Object`[src]

`pub fn is_prototype_of(&self, value: &JsValue) -> bool`[src]

`impl Object`[src]

`pub fn keys(object: &Object) -> Array`[src]

`impl Object`[src]

`pub fn new() -> Object`[src]

`impl Object`[src]

`pub fn prevent_extensions(object: &Object)`[src]

`impl Object`[src]

`pub fn property_is_enumerable(&self, property: &JsValue) -> bool`[src]

`impl Object`[src]

`pub fn seal(value: &Object) -> Object`[src]

`impl Object`[src]

`pub fn set_prototype_of(object: &Object, prototype: &Object) -> Object`[src]

`impl Object`[src]

`pub fn to_locale_string(&self) -> JsString`[src]

`impl Object`[src]

`pub fn to_string(&self) -> JsString`[src]

`impl Object`[src]

`pub fn value_of(&self) -> Object`[src]

`impl Object`[src]

`pub fn values(object: &Object) -> Array`[src]

`impl Object`[src]

`pub fn try_from(val: &JsValue) -> Option<&Object>`[src]

`pub const NULL: JsValue`[src]

`pub const UNDEFINED: JsValue`[src]

`pub const TRUE: JsValue`[src]

`pub const FALSE: JsValue`[src]

`pub fn as_f64(&self) -> Option<f64>`[src]

`pub fn is_string(&self) -> bool`[src]

`pub fn as_string(&self) -> Option<String>`[src]

`pub fn as_bool(&self) -> Option<bool>`[src]

`pub fn is_null(&self) -> bool`[src]

`pub fn is_undefined(&self) -> bool`[src]

`pub fn is_symbol(&self) -> bool`[src]

`pub fn is_object(&self) -> bool`[src]

`pub fn is_function(&self) -> bool`[src]

`pub fn is_truthy(&self) -> bool`[src]

`pub fn is_falsy(&self) -> bool`[src]

`impl AsRef<JsValue> for Object`[src]