Struct web_sys::Performance

source ·
pub struct Performance { /* private fields */ }
Expand description

The Performance class.

MDN Documentation

This API requires the following crate features to be activated: Performance

Implementations§

source§

impl Performance

source

pub fn time_origin(&self) -> f64

Getter for the timeOrigin field of this object.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn timing(&self) -> PerformanceTiming

Getter for the timing field of this object.

MDN Documentation

This API requires the following crate features to be activated: Performance, PerformanceTiming

source§

impl Performance

source

pub fn navigation(&self) -> PerformanceNavigation

Getter for the navigation field of this object.

MDN Documentation

This API requires the following crate features to be activated: Performance, PerformanceNavigation

source§

impl Performance

source

pub fn onresourcetimingbufferfull(&self) -> Option<Function>

Getter for the onresourcetimingbufferfull field of this object.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn set_onresourcetimingbufferfull(&self, value: Option<&Function>)

Setter for the onresourcetimingbufferfull field of this object.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn clear_marks(&self)

The clearMarks() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn clear_marks_with_mark_name(&self, mark_name: &str)

The clearMarks() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn clear_measures(&self)

The clearMeasures() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn clear_measures_with_measure_name(&self, measure_name: &str)

The clearMeasures() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn clear_resource_timings(&self)

The clearResourceTimings() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn get_entries(&self) -> Array

The getEntries() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn get_entries_by_name(&self, name: &str) -> Array

The getEntriesByName() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn get_entries_by_name_with_entry_type( &self, name: &str, entry_type: &str ) -> Array

The getEntriesByName() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn get_entries_by_type(&self, entry_type: &str) -> Array

The getEntriesByType() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn mark(&self, mark_name: &str) -> Result<(), JsValue>

The mark() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn measure(&self, measure_name: &str) -> Result<(), JsValue>

The measure() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn measure_with_start_mark( &self, measure_name: &str, start_mark: &str ) -> Result<(), JsValue>

The measure() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn measure_with_start_mark_and_end_mark( &self, measure_name: &str, start_mark: &str, end_mark: &str ) -> Result<(), JsValue>

The measure() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn measure_user_agent_specific_memory(&self) -> Promise

The measureUserAgentSpecificMemory() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

This API is unstable and requires --cfg=web_sys_unstable_apis to be activated, as described in the wasm-bindgen guide

source§

impl Performance

source

pub fn now(&self) -> f64

The now() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn set_resource_timing_buffer_size(&self, max_size: u32)

The setResourceTimingBufferSize() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

source§

impl Performance

source

pub fn to_json(&self) -> Object

The toJSON() method.

MDN Documentation

This API requires the following crate features to be activated: Performance

Methods from Deref<Target = EventTarget>§

source

pub fn add_event_listener_with_callback( &self, type_: &str, listener: &Function ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventTarget

source

pub fn add_event_listener_with_event_listener( &self, type_: &str, listener: &EventListener ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListener, EventTarget

source

pub fn add_event_listener_with_callback_and_add_event_listener_options( &self, type_: &str, listener: &Function, options: &AddEventListenerOptions ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: AddEventListenerOptions, EventTarget

source

pub fn add_event_listener_with_event_listener_and_add_event_listener_options( &self, type_: &str, listener: &EventListener, options: &AddEventListenerOptions ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: AddEventListenerOptions, EventListener, EventTarget

source

pub fn add_event_listener_with_callback_and_bool( &self, type_: &str, listener: &Function, options: bool ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventTarget

source

pub fn add_event_listener_with_event_listener_and_bool( &self, type_: &str, listener: &EventListener, options: bool ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListener, EventTarget

source

pub fn add_event_listener_with_callback_and_add_event_listener_options_and_wants_untrusted( &self, type_: &str, listener: &Function, options: &AddEventListenerOptions, wants_untrusted: Option<bool> ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: AddEventListenerOptions, EventTarget

source

pub fn add_event_listener_with_event_listener_and_add_event_listener_options_and_wants_untrusted( &self, type_: &str, listener: &EventListener, options: &AddEventListenerOptions, wants_untrusted: Option<bool> ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: AddEventListenerOptions, EventListener, EventTarget

source

pub fn add_event_listener_with_callback_and_bool_and_wants_untrusted( &self, type_: &str, listener: &Function, options: bool, wants_untrusted: Option<bool> ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventTarget

source

pub fn add_event_listener_with_event_listener_and_bool_and_wants_untrusted( &self, type_: &str, listener: &EventListener, options: bool, wants_untrusted: Option<bool> ) -> Result<(), JsValue>

The addEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListener, EventTarget

source

pub fn dispatch_event(&self, event: &Event) -> Result<bool, JsValue>

The dispatchEvent() method.

MDN Documentation

This API requires the following crate features to be activated: Event, EventTarget

source

pub fn remove_event_listener_with_callback( &self, type_: &str, listener: &Function ) -> Result<(), JsValue>

The removeEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventTarget

source

pub fn remove_event_listener_with_event_listener( &self, type_: &str, listener: &EventListener ) -> Result<(), JsValue>

The removeEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListener, EventTarget

source

pub fn remove_event_listener_with_callback_and_event_listener_options( &self, type_: &str, listener: &Function, options: &EventListenerOptions ) -> Result<(), JsValue>

The removeEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListenerOptions, EventTarget

source

pub fn remove_event_listener_with_event_listener_and_event_listener_options( &self, type_: &str, listener: &EventListener, options: &EventListenerOptions ) -> Result<(), JsValue>

The removeEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListener, EventListenerOptions, EventTarget

source

pub fn remove_event_listener_with_callback_and_bool( &self, type_: &str, listener: &Function, options: bool ) -> Result<(), JsValue>

The removeEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventTarget

source

pub fn remove_event_listener_with_event_listener_and_bool( &self, type_: &str, listener: &EventListener, options: bool ) -> Result<(), JsValue>

The removeEventListener() method.

MDN Documentation

This API requires the following crate features to be activated: EventListener, EventTarget

Methods from Deref<Target = Object>§

source

pub fn constructor(&self) -> Function

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

MDN documentation

source

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

source

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

source

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

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

MDN documentation

source

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

source

pub fn to_string(&self) -> JsString

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

MDN documentation

source

pub fn value_of(&self) -> Object

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

MDN documentation

Methods from Deref<Target = JsValue>§

source

pub const NULL: JsValue = _

source

pub const UNDEFINED: JsValue = _

source

pub const TRUE: JsValue = _

source

pub const FALSE: JsValue = _

source

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.

source

pub fn is_string(&self) -> bool

Tests whether this JS value is a JS string.

source

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.

source

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.

source

pub fn is_null(&self) -> bool

Tests whether this JS value is null

source

pub fn is_undefined(&self) -> bool

Tests whether this JS value is undefined

source

pub fn is_symbol(&self) -> bool

Tests whether the type of this JS value is symbol

source

pub fn is_object(&self) -> bool

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

source

pub fn is_array(&self) -> bool

Tests whether this JS value is an instance of Array.

source

pub fn is_function(&self) -> bool

Tests whether the type of this JS value is function.

source

pub fn is_bigint(&self) -> bool

Tests whether the type of this JS value is bigint.

source

pub fn js_typeof(&self) -> JsValue

Applies the unary typeof JS operator on a JsValue.

MDN documentation

source

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

Applies the binary in JS operator on the two JsValues.

MDN documentation

source

pub fn is_truthy(&self) -> bool

Tests whether the value is “truthy”.

source

pub fn is_falsy(&self) -> bool

Tests whether the value is “falsy”.

source

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

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

MDN documentation

source

pub fn bit_not(&self) -> JsValue

Applies the unary ~ JS operator on a JsValue.

MDN documentation

source

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

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

MDN documentation

source

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

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

MDN documentation

source

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

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

MDN documentation

source

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

Applies the binary < JS operator on the two JsValues.

MDN documentation

source

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

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

MDN documentation

source

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

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

MDN documentation

source

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

Applies the binary > JS operator on the two JsValues.

MDN documentation

source

pub fn unchecked_into_f64(&self) -> f64

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

MDN documentation

Trait Implementations§

source§

impl AsRef<EventTarget> for Performance

source§

fn as_ref(&self) -> &EventTarget

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

impl AsRef<JsValue> for Performance

source§

fn as_ref(&self) -> &JsValue

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

impl AsRef<Object> for Performance

source§

fn as_ref(&self) -> &Object

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

impl AsRef<Performance> for Performance

source§

fn as_ref(&self) -> &Performance

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

impl Clone for Performance

source§

fn clone(&self) -> Performance

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for Performance

source§

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

Formats the value using the given formatter. Read more
source§

impl Deref for Performance

§

type Target = EventTarget

The resulting type after dereferencing.
source§

fn deref(&self) -> &EventTarget

Dereferences the value.
source§

impl From<JsValue> for Performance

source§

fn from(obj: JsValue) -> Performance

Converts to this type from the input type.
source§

impl From<Performance> for EventTarget

source§

fn from(obj: Performance) -> EventTarget

Converts to this type from the input type.
source§

impl From<Performance> for JsValue

source§

fn from(obj: Performance) -> JsValue

Converts to this type from the input type.
source§

impl From<Performance> for Object

source§

fn from(obj: Performance) -> Object

Converts to this type from the input type.
source§

impl FromWasmAbi for Performance

§

type Abi = <JsValue as FromWasmAbi>::Abi

The wasm ABI type that this converts from when coming back out from the ABI boundary.
source§

unsafe fn from_abi(js: Self::Abi) -> Self

Recover a Self from Self::Abi. Read more
source§

impl<'a> IntoWasmAbi for &'a Performance

§

type Abi = <&'a JsValue as IntoWasmAbi>::Abi

The wasm ABI type that this converts into when crossing the ABI boundary.
source§

fn into_abi(self) -> Self::Abi

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.
source§

impl IntoWasmAbi for Performance

§

type Abi = <JsValue as IntoWasmAbi>::Abi

The wasm ABI type that this converts into when crossing the ABI boundary.
source§

fn into_abi(self) -> Self::Abi

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.
source§

impl JsCast for Performance

source§

fn instanceof(val: &JsValue) -> bool

Performs a dynamic instanceof check to see whether the JsValue provided is an instance of this type. Read more
source§

fn unchecked_from_js(val: JsValue) -> Self

Performs a zero-cost unchecked conversion from a JsValue into an instance of Self Read more
source§

fn unchecked_from_js_ref(val: &JsValue) -> &Self

Performs a zero-cost unchecked conversion from a &JsValue into an instance of &Self. Read more
source§

fn has_type<T>(&self) -> bool
where T: JsCast,

Test whether this JS value has a type T. Read more
source§

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
source§

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
source§

fn unchecked_into<T>(self) -> T
where T: JsCast,

Performs a zero-cost unchecked cast into the specified type. Read more
source§

fn unchecked_ref<T>(&self) -> &T
where T: JsCast,

Performs a zero-cost unchecked cast into a reference to the specified type. Read more
source§

fn is_instance_of<T>(&self) -> bool
where T: JsCast,

Test whether this JS value is an instance of the type T. Read more
source§

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
source§

impl LongRefFromWasmAbi for Performance

§

type Abi = <JsValue as LongRefFromWasmAbi>::Abi

Same as RefFromWasmAbi::Abi
§

type Anchor = Performance

Same as RefFromWasmAbi::Anchor
source§

unsafe fn long_ref_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi
source§

impl OptionFromWasmAbi for Performance

source§

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.
source§

impl<'a> OptionIntoWasmAbi for &'a Performance

source§

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option. Read more
source§

impl OptionIntoWasmAbi for Performance

source§

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option. Read more
source§

impl PartialEq for Performance

source§

fn eq(&self, other: &Performance) -> 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.
source§

impl RefFromWasmAbi for Performance

§

type Abi = <JsValue as RefFromWasmAbi>::Abi

The wasm ABI type references to Self are recovered from.
§

type Anchor = ManuallyDrop<Performance>

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.
source§

unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi. Read more
source§

impl WasmDescribe for Performance

source§

impl Eq for Performance

source§

impl StructuralPartialEq for Performance

Auto Trait Implementations§

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

source§

fn into(self) -> U

Calls U::from(self).

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

source§

impl<T> ReturnWasmAbi for T
where T: IntoWasmAbi,

§

type Abi = <T as IntoWasmAbi>::Abi

Same as IntoWasmAbi::Abi
source§

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.
source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> VectorFromWasmAbi for T
where T: JsObject,

source§

impl<T> VectorIntoWasmAbi for T
where T: JsObject,