Struct custom_element::GeneratedConstructor

pub struct GeneratedConstructor(pub Function);

Wrapper type around the JavaScript GeneratedCustomElement class for easier/more ergonomic calling/conversions

Tuple Fields

0: Function

Implementations

impl GeneratedConstructor

pub fn construct(&self) -> Result<Function, JsValue>

Calls the GeneratedCustomElement’s constructor function with arguments. Equivalent to calling new GeneratedCustomElement() in JavaScript

pub fn construct_with_arguments( &self, args: impl AsRef<[JsValue]> ) -> Result<Function, JsValue>

Calls the GeneratedCustomElement’s constructor function with arguments. Equivalent to calling new GeneratedCustomElement() in JavaScript

pub fn inner(&self) -> &Function

Get raw, inner JavaScript js_sys::Function

pub fn to_inner(&self) -> Function

Clone and return the inner JavaScript js_sys::Function

pub fn into_inner(self) -> Function

Convert into the raw, inner JavaScript js_sys::Function

Methods from Deref<Target = Function>

pub fn apply(&self, context: &JsValue, args: &Array) -> Result<JsValue, JsValue>

The apply() method calls a function with a given this value, and arguments provided as an array (or an array-like object).

MDN documentation

pub fn call0(&self, context: &JsValue) -> Result<JsValue, JsValue>

The call() method calls a function with a given this value and arguments provided individually.

MDN documentation

pub fn call1( &self, context: &JsValue, arg1: &JsValue ) -> Result<JsValue, JsValue>

The call() method calls a function with a given this value and arguments provided individually.

MDN documentation

pub fn call2( &self, context: &JsValue, arg1: &JsValue, arg2: &JsValue ) -> Result<JsValue, JsValue>

The call() method calls a function with a given this value and arguments provided individually.

MDN documentation

pub fn call3( &self, context: &JsValue, arg1: &JsValue, arg2: &JsValue, arg3: &JsValue ) -> Result<JsValue, JsValue>

The call() method calls a function with a given this value and arguments provided individually.

MDN documentation

pub fn bind(&self, context: &JsValue) -> Function

The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

MDN documentation

pub fn bind0(&self, context: &JsValue) -> Function

The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

MDN documentation

pub fn bind1(&self, context: &JsValue, arg1: &JsValue) -> Function

The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

MDN documentation

pub fn bind2( &self, context: &JsValue, arg1: &JsValue, arg2: &JsValue ) -> Function

The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

MDN documentation

pub fn bind3( &self, context: &JsValue, arg1: &JsValue, arg2: &JsValue, arg3: &JsValue ) -> Function

The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

MDN documentation

pub fn length(&self) -> u32

The length property indicates the number of arguments expected by the function.

MDN documentation

pub fn name(&self) -> JsString

A Function object’s read-only name property indicates the function’s name as specified when it was created or “anonymous” for functions created anonymously.

MDN documentation

pub fn to_string(&self) -> JsString

The toString() method returns a string representing the source code of the function.

MDN documentation

Methods from Deref<Target = Object>

pub fn constructor(&self) -> Function

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

MDN documentation

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).

MDN documentation

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

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

MDN documentation

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

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

MDN documentation

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.

MDN documentation

pub fn to_string(&self) -> JsString

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

MDN documentation

pub fn value_of(&self) -> Object

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

MDN documentation

Methods from Deref<Target = JsValue>

pub const NULL: JsValue = _

pub const UNDEFINED: JsValue = _

pub const TRUE: JsValue = _

pub const FALSE: JsValue = _

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.

pub fn is_string(&self) -> bool

Tests whether this JS value is a JS 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.

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.

pub fn is_null(&self) -> bool

Tests whether this JS value is null

pub fn is_undefined(&self) -> bool

Tests whether this JS value is undefined

pub fn is_symbol(&self) -> bool

Tests whether the type of this JS value is symbol

pub fn is_object(&self) -> bool

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

pub fn is_array(&self) -> bool

Tests whether this JS value is an instance of Array.

pub fn is_function(&self) -> bool

Tests whether the type of this JS value is function.

pub fn is_bigint(&self) -> bool

Tests whether the type of this JS value is bigint.

pub fn js_typeof(&self) -> JsValue

Applies the unary typeof JS operator on a JsValue.

MDN documentation

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

Applies the binary in JS operator on the two JsValues.

MDN documentation

pub fn is_truthy(&self) -> bool

Tests whether the value is “truthy”.

pub fn is_falsy(&self) -> bool

Tests whether the value is “falsy”.

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

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

MDN documentation

pub fn bit_not(&self) -> JsValue

Applies the unary ~ JS operator on a JsValue.

MDN documentation

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

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

MDN documentation

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

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

MDN documentation

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

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

MDN documentation

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

Applies the binary < JS operator on the two JsValues.

MDN documentation

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

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

MDN documentation

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

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

MDN documentation

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

Applies the binary > JS operator on the two JsValues.

MDN documentation

pub fn unchecked_into_f64(&self) -> f64

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

MDN documentation

Trait Implementations

impl AsMut<Function> for GeneratedConstructor

fn as_mut(&mut self) -> &mut Function

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<Function> for GeneratedConstructor

fn as_ref(&self) -> &Function

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for GeneratedConstructor

fn clone(&self) -> GeneratedConstructor

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GeneratedConstructor

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

Formats the value using the given formatter.

impl Default for GeneratedConstructor

fn default() -> GeneratedConstructor

Returns the “default value” for a type.

impl Deref for GeneratedConstructor

type Target = Function

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl PartialEq for GeneratedConstructor

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

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

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.

impl Eq for GeneratedConstructor

impl StructuralPartialEq for GeneratedConstructor