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
sourceimpl JsValue
impl JsValue
sourcepub fn from_str(s: &str) -> JsValue
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.
sourcepub fn from_f64(n: f64) -> JsValue
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.
sourcepub fn bigint_from_str(s: &str) -> JsValue
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.
sourcepub fn from_bool(b: bool) -> JsValue
pub 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.
sourcepub fn symbol(description: Option<&str>) -> JsValue
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.
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
sourceimpl AsRef<JsValue> for TransitionEvent
impl AsRef<JsValue> for TransitionEvent
sourceimpl AsRef<JsValue> for CompositionEvent
impl AsRef<JsValue> for CompositionEvent
sourceimpl AsRef<JsValue> for AnyNodeValue
impl AsRef<JsValue> for AnyNodeValue
sourceimpl AsRef<JsValue> for BaseSyntheticEvent
impl AsRef<JsValue> for BaseSyntheticEvent
sourceimpl AsRef<JsValue> for ClipboardEvent
impl AsRef<JsValue> for ClipboardEvent
sourceimpl AsRef<JsValue> for CompositionEvent
impl AsRef<JsValue> for CompositionEvent
sourceimpl AsRef<JsValue> for KeyboardEvent
impl AsRef<JsValue> for KeyboardEvent
sourceimpl AsRef<JsValue> for PointerEvent
impl AsRef<JsValue> for PointerEvent
sourceimpl AsRef<JsValue> for AnimationEvent
impl AsRef<JsValue> for AnimationEvent
sourceimpl AsRef<JsValue> for TransitionEvent
impl AsRef<JsValue> for TransitionEvent
sourceimpl AsRef<JsValue> for PointerEvent
impl AsRef<JsValue> for PointerEvent
sourceimpl AsRef<JsValue> for AnimationEvent
impl AsRef<JsValue> for AnimationEvent
sourceimpl AsRef<JsValue> for KeyboardEvent
impl AsRef<JsValue> for KeyboardEvent
sourceimpl From<AnimationEvent> for JsValue
impl From<AnimationEvent> for JsValue
sourcefn from(obj: AnimationEvent) -> JsValue
fn from(obj: AnimationEvent) -> JsValue
Performs the conversion.
sourceimpl From<AnimationEvent> for JsValue
impl From<AnimationEvent> for JsValue
sourcefn from(obj: AnimationEvent) -> JsValue
fn from(obj: AnimationEvent) -> JsValue
Performs the conversion.
sourceimpl From<ArrayBuffer> for JsValue
impl From<ArrayBuffer> for JsValue
sourcefn from(obj: ArrayBuffer) -> JsValue
fn from(obj: ArrayBuffer) -> JsValue
Performs the conversion.
sourceimpl From<AsyncIterator> for JsValue
impl From<AsyncIterator> for JsValue
sourcefn from(obj: AsyncIterator) -> JsValue
fn from(obj: AsyncIterator) -> JsValue
Performs the conversion.
sourceimpl From<BaseSyntheticEvent> for JsValue
impl From<BaseSyntheticEvent> for JsValue
sourcefn from(obj: BaseSyntheticEvent) -> JsValue
fn from(obj: BaseSyntheticEvent) -> JsValue
Performs the conversion.
sourceimpl From<BigInt64Array> for JsValue
impl From<BigInt64Array> for JsValue
sourcefn from(obj: BigInt64Array) -> JsValue
fn from(obj: BigInt64Array) -> JsValue
Performs the conversion.
sourceimpl From<BigUint64Array> for JsValue
impl From<BigUint64Array> for JsValue
sourcefn from(obj: BigUint64Array) -> JsValue
fn from(obj: BigUint64Array) -> JsValue
Performs the conversion.
sourceimpl From<ChangeEvent> for JsValue
impl From<ChangeEvent> for JsValue
sourcefn from(obj: ChangeEvent) -> JsValue
fn from(obj: ChangeEvent) -> JsValue
Performs the conversion.
sourceimpl From<ClipboardEvent> for JsValue
impl From<ClipboardEvent> for JsValue
sourcefn from(obj: ClipboardEvent) -> JsValue
fn from(obj: ClipboardEvent) -> JsValue
Performs the conversion.
sourceimpl From<CompileError> for JsValue
impl From<CompileError> for JsValue
sourcefn from(obj: CompileError) -> JsValue
fn from(obj: CompileError) -> JsValue
Performs the conversion.
sourceimpl From<CompositionEvent> for JsValue
impl From<CompositionEvent> for JsValue
sourcefn from(obj: CompositionEvent) -> JsValue
fn from(obj: CompositionEvent) -> JsValue
Performs the conversion.
sourceimpl From<CompositionEvent> for JsValue
impl From<CompositionEvent> for JsValue
sourcefn from(obj: CompositionEvent) -> JsValue
fn from(obj: CompositionEvent) -> JsValue
Performs the conversion.
sourceimpl From<DataTransfer> for JsValue
impl From<DataTransfer> for JsValue
sourcefn from(obj: DataTransfer) -> JsValue
fn from(obj: DataTransfer) -> JsValue
Performs the conversion.
sourceimpl From<DateTimeFormat> for JsValue
impl From<DateTimeFormat> for JsValue
sourcefn from(obj: DateTimeFormat) -> JsValue
fn from(obj: DateTimeFormat) -> JsValue
Performs the conversion.
sourceimpl From<EventTarget> for JsValue
impl From<EventTarget> for JsValue
sourcefn from(obj: EventTarget) -> JsValue
fn from(obj: EventTarget) -> JsValue
Performs the conversion.
sourceimpl From<Float32Array> for JsValue
impl From<Float32Array> for JsValue
sourcefn from(obj: Float32Array) -> JsValue
fn from(obj: Float32Array) -> JsValue
Performs the conversion.
sourceimpl From<Float64Array> for JsValue
impl From<Float64Array> for JsValue
sourcefn from(obj: Float64Array) -> JsValue
fn from(obj: Float64Array) -> JsValue
Performs the conversion.
sourceimpl From<FocusEvent> for JsValue
impl From<FocusEvent> for JsValue
sourcefn from(obj: FocusEvent) -> JsValue
fn from(obj: FocusEvent) -> JsValue
Performs the conversion.
sourceimpl From<FocusEvent> for JsValue
impl From<FocusEvent> for JsValue
sourcefn from(obj: FocusEvent) -> JsValue
fn from(obj: FocusEvent) -> JsValue
Performs the conversion.
sourceimpl From<HtmlElement> for JsValue
impl From<HtmlElement> for JsValue
sourcefn from(obj: HtmlElement) -> JsValue
fn from(obj: HtmlElement) -> JsValue
Performs the conversion.
sourceimpl From<Int16Array> for JsValue
impl From<Int16Array> for JsValue
sourcefn from(obj: Int16Array) -> JsValue
fn from(obj: Int16Array) -> JsValue
Performs the conversion.
sourceimpl From<Int32Array> for JsValue
impl From<Int32Array> for JsValue
sourcefn from(obj: Int32Array) -> JsValue
fn from(obj: Int32Array) -> JsValue
Performs the conversion.
sourceimpl From<IteratorNext> for JsValue
impl From<IteratorNext> for JsValue
sourcefn from(obj: IteratorNext) -> JsValue
fn from(obj: IteratorNext) -> JsValue
Performs the conversion.
sourceimpl From<JsValue> for MouseEvent
impl From<JsValue> for MouseEvent
sourcefn from(obj: JsValue) -> MouseEvent
fn from(obj: JsValue) -> MouseEvent
Performs the conversion.
sourceimpl From<JsValue> for CompositionEvent
impl From<JsValue> for CompositionEvent
sourcefn from(obj: JsValue) -> CompositionEvent
fn from(obj: JsValue) -> CompositionEvent
Performs the conversion.
sourceimpl From<JsValue> for PointerEvent
impl From<JsValue> for PointerEvent
sourcefn from(obj: JsValue) -> PointerEvent
fn from(obj: JsValue) -> PointerEvent
Performs the conversion.
sourceimpl From<JsValue> for EventTarget
impl From<JsValue> for EventTarget
sourcefn from(obj: JsValue) -> EventTarget
fn from(obj: JsValue) -> EventTarget
Performs the conversion.
sourceimpl From<JsValue> for WheelEvent
impl From<JsValue> for WheelEvent
sourcefn from(obj: JsValue) -> WheelEvent
fn from(obj: JsValue) -> WheelEvent
Performs the conversion.
sourceimpl From<JsValue> for BaseSyntheticEvent
impl From<JsValue> for BaseSyntheticEvent
sourcefn from(obj: JsValue) -> BaseSyntheticEvent
fn from(obj: JsValue) -> BaseSyntheticEvent
Performs the conversion.
sourceimpl From<JsValue> for ClipboardEvent
impl From<JsValue> for ClipboardEvent
sourcefn from(obj: JsValue) -> ClipboardEvent
fn from(obj: JsValue) -> ClipboardEvent
Performs the conversion.
sourceimpl From<JsValue> for CompositionEvent
impl From<JsValue> for CompositionEvent
sourcefn from(obj: JsValue) -> CompositionEvent
fn from(obj: JsValue) -> CompositionEvent
Performs the conversion.
sourceimpl From<JsValue> for FocusEvent
impl From<JsValue> for FocusEvent
sourcefn from(obj: JsValue) -> FocusEvent
fn from(obj: JsValue) -> FocusEvent
Performs the conversion.
sourceimpl From<JsValue> for KeyboardEvent
impl From<JsValue> for KeyboardEvent
sourcefn from(obj: JsValue) -> KeyboardEvent
fn from(obj: JsValue) -> KeyboardEvent
Performs the conversion.
sourceimpl From<JsValue> for TouchEvent
impl From<JsValue> for TouchEvent
sourcefn from(obj: JsValue) -> TouchEvent
fn from(obj: JsValue) -> TouchEvent
Performs the conversion.
sourceimpl From<JsValue> for PointerEvent
impl From<JsValue> for PointerEvent
sourcefn from(obj: JsValue) -> PointerEvent
fn from(obj: JsValue) -> PointerEvent
Performs the conversion.
sourceimpl From<JsValue> for WheelEvent
impl From<JsValue> for WheelEvent
sourcefn from(obj: JsValue) -> WheelEvent
fn from(obj: JsValue) -> WheelEvent
Performs the conversion.
sourceimpl From<JsValue> for AnimationEvent
impl From<JsValue> for AnimationEvent
sourcefn from(obj: JsValue) -> AnimationEvent
fn from(obj: JsValue) -> AnimationEvent
Performs the conversion.
sourceimpl From<JsValue> for TransitionEvent
impl From<JsValue> for TransitionEvent
sourcefn from(obj: JsValue) -> TransitionEvent
fn from(obj: JsValue) -> TransitionEvent
Performs the conversion.
sourceimpl From<JsValue> for ChangeEvent
impl From<JsValue> for ChangeEvent
sourcefn from(obj: JsValue) -> ChangeEvent
fn from(obj: JsValue) -> ChangeEvent
Performs the conversion.
sourceimpl From<JsValue> for AnimationEvent
impl From<JsValue> for AnimationEvent
sourcefn from(obj: JsValue) -> AnimationEvent
fn from(obj: JsValue) -> AnimationEvent
Performs the conversion.
sourceimpl From<JsValue> for MouseEvent
impl From<JsValue> for MouseEvent
sourcefn from(obj: JsValue) -> MouseEvent
fn from(obj: JsValue) -> MouseEvent
Performs the conversion.
sourceimpl From<JsValue> for TransitionEvent
impl From<JsValue> for TransitionEvent
sourcefn from(obj: JsValue) -> TransitionEvent
fn from(obj: JsValue) -> TransitionEvent
Performs the conversion.
sourceimpl From<JsValue> for TouchEvent
impl From<JsValue> for TouchEvent
sourcefn from(obj: JsValue) -> TouchEvent
fn from(obj: JsValue) -> TouchEvent
Performs the conversion.
sourceimpl From<JsValue> for FocusEvent
impl From<JsValue> for FocusEvent
sourcefn from(obj: JsValue) -> FocusEvent
fn from(obj: JsValue) -> FocusEvent
Performs the conversion.
sourceimpl From<JsValue> for KeyboardEvent
impl From<JsValue> for KeyboardEvent
sourcefn from(obj: JsValue) -> KeyboardEvent
fn from(obj: JsValue) -> KeyboardEvent
Performs the conversion.
sourceimpl From<KeyboardEvent> for JsValue
impl From<KeyboardEvent> for JsValue
sourcefn from(obj: KeyboardEvent) -> JsValue
fn from(obj: KeyboardEvent) -> JsValue
Performs the conversion.
sourceimpl From<KeyboardEvent> for JsValue
impl From<KeyboardEvent> for JsValue
sourcefn from(obj: KeyboardEvent) -> JsValue
fn from(obj: KeyboardEvent) -> JsValue
Performs the conversion.
sourceimpl From<MouseEvent> for JsValue
impl From<MouseEvent> for JsValue
sourcefn from(obj: MouseEvent) -> JsValue
fn from(obj: MouseEvent) -> JsValue
Performs the conversion.
sourceimpl From<MouseEvent> for JsValue
impl From<MouseEvent> for JsValue
sourcefn from(obj: MouseEvent) -> JsValue
fn from(obj: MouseEvent) -> JsValue
Performs the conversion.
sourceimpl From<MutableRefObject> for JsValue
impl From<MutableRefObject> for JsValue
sourcefn from(obj: MutableRefObject) -> JsValue
fn from(obj: MutableRefObject) -> JsValue
Performs the conversion.
sourceimpl From<MutableRefObjectBool> for JsValue
impl From<MutableRefObjectBool> for JsValue
sourcefn from(obj: MutableRefObjectBool) -> JsValue
fn from(obj: MutableRefObjectBool) -> JsValue
Performs the conversion.
sourceimpl From<MutableRefObjectHtmlElement> for JsValue
impl From<MutableRefObjectHtmlElement> for JsValue
sourcefn from(obj: MutableRefObjectHtmlElement) -> JsValue
fn from(obj: MutableRefObjectHtmlElement) -> JsValue
Performs the conversion.
sourceimpl From<MutableRefObjectOptionalHtmlElement> for JsValue
impl From<MutableRefObjectOptionalHtmlElement> for JsValue
sourcefn from(obj: MutableRefObjectOptionalHtmlElement) -> JsValue
fn from(obj: MutableRefObjectOptionalHtmlElement) -> JsValue
Performs the conversion.
sourceimpl From<MutableRefObjectOptionalUsize> for JsValue
impl From<MutableRefObjectOptionalUsize> for JsValue
sourcefn from(obj: MutableRefObjectOptionalUsize) -> JsValue
fn from(obj: MutableRefObjectOptionalUsize) -> JsValue
Performs the conversion.
sourceimpl From<MutableRefObjectUsize> for JsValue
impl From<MutableRefObjectUsize> for JsValue
sourcefn from(obj: MutableRefObjectUsize) -> JsValue
fn from(obj: MutableRefObjectUsize) -> JsValue
Performs the conversion.
sourceimpl From<NumberFormat> for JsValue
impl From<NumberFormat> for JsValue
sourcefn from(obj: NumberFormat) -> JsValue
fn from(obj: NumberFormat) -> JsValue
Performs the conversion.
sourceimpl From<PluralRules> for JsValue
impl From<PluralRules> for JsValue
sourcefn from(obj: PluralRules) -> JsValue
fn from(obj: PluralRules) -> JsValue
Performs the conversion.
sourceimpl From<PointerEvent> for JsValue
impl From<PointerEvent> for JsValue
sourcefn from(obj: PointerEvent) -> JsValue
fn from(obj: PointerEvent) -> JsValue
Performs the conversion.
sourceimpl From<PointerEvent> for JsValue
impl From<PointerEvent> for JsValue
sourcefn from(obj: PointerEvent) -> JsValue
fn from(obj: PointerEvent) -> JsValue
Performs the conversion.
sourceimpl From<RangeError> for JsValue
impl From<RangeError> for JsValue
sourcefn from(obj: RangeError) -> JsValue
fn from(obj: RangeError) -> JsValue
Performs the conversion.
sourceimpl From<ReferenceError> for JsValue
impl From<ReferenceError> for JsValue
sourcefn from(obj: ReferenceError) -> JsValue
fn from(obj: ReferenceError) -> JsValue
Performs the conversion.
sourceimpl From<RuntimeError> for JsValue
impl From<RuntimeError> for JsValue
sourcefn from(obj: RuntimeError) -> JsValue
fn from(obj: RuntimeError) -> JsValue
Performs the conversion.
sourcefn from(obj: SharedArrayBuffer) -> JsValue
fn from(obj: SharedArrayBuffer) -> JsValue
Performs the conversion.
sourceimpl From<SyntaxError> for JsValue
impl From<SyntaxError> for JsValue
sourcefn from(obj: SyntaxError) -> JsValue
fn from(obj: SyntaxError) -> JsValue
Performs the conversion.
sourceimpl From<TouchEvent> for JsValue
impl From<TouchEvent> for JsValue
sourcefn from(obj: TouchEvent) -> JsValue
fn from(obj: TouchEvent) -> JsValue
Performs the conversion.
sourceimpl From<TouchEvent> for JsValue
impl From<TouchEvent> for JsValue
sourcefn from(obj: TouchEvent) -> JsValue
fn from(obj: TouchEvent) -> JsValue
Performs the conversion.
sourceimpl From<TransitionEvent> for JsValue
impl From<TransitionEvent> for JsValue
sourcefn from(obj: TransitionEvent) -> JsValue
fn from(obj: TransitionEvent) -> JsValue
Performs the conversion.
sourceimpl From<TransitionEvent> for JsValue
impl From<TransitionEvent> for JsValue
sourcefn from(obj: TransitionEvent) -> JsValue
fn from(obj: TransitionEvent) -> JsValue
Performs the conversion.
sourceimpl From<Uint16Array> for JsValue
impl From<Uint16Array> for JsValue
sourcefn from(obj: Uint16Array) -> JsValue
fn from(obj: Uint16Array) -> JsValue
Performs the conversion.
sourceimpl From<Uint32Array> for JsValue
impl From<Uint32Array> for JsValue
sourcefn from(obj: Uint32Array) -> JsValue
fn from(obj: Uint32Array) -> JsValue
Performs the conversion.
sourceimpl From<Uint8Array> for JsValue
impl From<Uint8Array> for JsValue
sourcefn from(obj: Uint8Array) -> JsValue
fn from(obj: Uint8Array) -> JsValue
Performs the conversion.
sourceimpl From<Uint8ClampedArray> for JsValue
impl From<Uint8ClampedArray> for JsValue
sourcefn from(obj: Uint8ClampedArray) -> JsValue
fn from(obj: Uint8ClampedArray) -> JsValue
Performs the conversion.
sourceimpl From<UseStateBoolObject> for JsValue
impl From<UseStateBoolObject> for JsValue
sourcefn from(obj: UseStateBoolObject) -> JsValue
fn from(obj: UseStateBoolObject) -> JsValue
Performs the conversion.
sourceimpl From<UseStateBoolObjectSetter> for JsValue
impl From<UseStateBoolObjectSetter> for JsValue
sourcefn from(obj: UseStateBoolObjectSetter) -> JsValue
fn from(obj: UseStateBoolObjectSetter) -> JsValue
Performs the conversion.
sourceimpl From<UseStateI32Object> for JsValue
impl From<UseStateI32Object> for JsValue
sourcefn from(obj: UseStateI32Object) -> JsValue
fn from(obj: UseStateI32Object) -> JsValue
Performs the conversion.
sourceimpl From<UseStateI32ObjectSetter> for JsValue
impl From<UseStateI32ObjectSetter> for JsValue
sourcefn from(obj: UseStateI32ObjectSetter) -> JsValue
fn from(obj: UseStateI32ObjectSetter) -> JsValue
Performs the conversion.
sourceimpl From<UseStateUsizeObject> for JsValue
impl From<UseStateUsizeObject> for JsValue
sourcefn from(obj: UseStateUsizeObject) -> JsValue
fn from(obj: UseStateUsizeObject) -> JsValue
Performs the conversion.
sourceimpl From<UseStateUsizeObjectSetter> for JsValue
impl From<UseStateUsizeObjectSetter> for JsValue
sourcefn from(obj: UseStateUsizeObjectSetter) -> JsValue
fn from(obj: UseStateUsizeObjectSetter) -> JsValue
Performs the conversion.
sourceimpl From<WheelEvent> for JsValue
impl From<WheelEvent> for JsValue
sourcefn from(obj: WheelEvent) -> JsValue
fn from(obj: WheelEvent) -> JsValue
Performs the conversion.
sourceimpl From<WheelEvent> for JsValue
impl From<WheelEvent> for JsValue
sourcefn from(obj: WheelEvent) -> JsValue
fn from(obj: WheelEvent) -> JsValue
Performs the conversion.
sourceimpl FromWasmAbi for JsValue
impl FromWasmAbi for JsValue
sourceimpl IntoWasmAbi for JsValue
impl IntoWasmAbi for JsValue
sourceimpl<'a> IntoWasmAbi for &'a JsValue
impl<'a> IntoWasmAbi for &'a JsValue
sourceimpl JsCast for JsValue
impl JsCast for JsValue
sourcefn instanceof(_val: &JsValue) -> bool
fn instanceof(_val: &JsValue) -> bool
Performs a dynamic instanceof
check to see whether the JsValue
provided is an instance of this type. Read more
sourcefn unchecked_from_js(val: JsValue) -> JsValue
fn unchecked_from_js(val: JsValue) -> JsValue
Performs a zero-cost unchecked conversion from a JsValue
into an
instance of Self
Read more
sourcefn unchecked_from_js_ref(val: &JsValue) -> &JsValue
fn unchecked_from_js_ref(val: &JsValue) -> &JsValue
Performs a zero-cost unchecked conversion from a &JsValue
into an
instance of &Self
. Read more
sourcefn has_type<T>(&self) -> bool where
T: JsCast,
fn has_type<T>(&self) -> bool where
T: JsCast,
Test whether this JS value has a type T
. Read more
sourcefn dyn_into<T>(self) -> Result<T, Self> where
T: JsCast,
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
sourcefn dyn_ref<T>(&self) -> Option<&T> where
T: JsCast,
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
sourcefn unchecked_into<T>(self) -> T where
T: JsCast,
fn unchecked_into<T>(self) -> T where
T: JsCast,
Performs a zero-cost unchecked cast into the specified type. Read more
sourcefn unchecked_ref<T>(&self) -> &T where
T: JsCast,
fn unchecked_ref<T>(&self) -> &T where
T: JsCast,
Performs a zero-cost unchecked cast into a reference to the specified type. Read more
sourcefn is_instance_of<T>(&self) -> bool where
T: JsCast,
fn is_instance_of<T>(&self) -> bool where
T: JsCast,
Test whether this JS value is an instance of the type T
. Read more
sourcefn is_type_of(val: &JsValue) -> bool
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
sourceimpl RefFromWasmAbi for JsValue
impl RefFromWasmAbi for JsValue
type Anchor = ManuallyDrop<JsValue>
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. Read more
sourceunsafe fn ref_from_abi(js: u32) -> <JsValue as RefFromWasmAbi>::Anchor
unsafe fn ref_from_abi(js: u32) -> <JsValue as RefFromWasmAbi>::Anchor
Recover a Self::Anchor
from Self::Abi
. Read more
Auto Trait Implementations
impl RefUnwindSafe for JsValue
impl !Send for JsValue
impl !Sync for JsValue
impl Unpin for JsValue
impl UnwindSafe for JsValue
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ReturnWasmAbi for T where
T: IntoWasmAbi,
impl<T> ReturnWasmAbi for T where
T: IntoWasmAbi,
type Abi = <T as IntoWasmAbi>::Abi
type Abi = <T as IntoWasmAbi>::Abi
Same as IntoWasmAbi::Abi
sourcefn return_abi(self) -> <T as ReturnWasmAbi>::Abi
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
. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more