Struct web_sys::PerformanceMark
source · [−]#[repr(transparent)]pub struct PerformanceMark { /* private fields */ }
Expand description
The PerformanceMark
class.
This API requires the following crate features to be activated: PerformanceMark
Methods from Deref<Target = PerformanceEntry>
sourcepub fn entry_type(&self) -> String
pub fn entry_type(&self) -> String
Getter for the entryType
field of this object.
This API requires the following crate features to be activated: PerformanceEntry
sourcepub fn start_time(&self) -> f64
pub fn start_time(&self) -> f64
Getter for the startTime
field of this object.
This API requires the following crate features to be activated: PerformanceEntry
Methods from Deref<Target = 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.
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).
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.
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.
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.
Methods from Deref<Target = JsValue>
pub const NULL: JsValue = JsValue{idx: JSIDX_NULL, _marker: marker::PhantomData,}
pub const UNDEFINED: JsValue = JsValue{idx: JSIDX_UNDEFINED, _marker: marker::PhantomData,}
pub const TRUE: JsValue = JsValue{idx: JSIDX_TRUE, _marker: marker::PhantomData,}
pub const FALSE: JsValue = JsValue{idx: JSIDX_FALSE, _marker: marker::PhantomData,}
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 PerformanceMark
impl AsRef<JsValue> for PerformanceMark
sourceimpl AsRef<Object> for PerformanceMark
impl AsRef<Object> for PerformanceMark
sourceimpl AsRef<PerformanceEntry> for PerformanceMark
impl AsRef<PerformanceEntry> for PerformanceMark
sourcefn as_ref(&self) -> &PerformanceEntry
fn as_ref(&self) -> &PerformanceEntry
Converts this type into a shared reference of the (usually inferred) input type.
sourceimpl AsRef<PerformanceMark> for PerformanceMark
impl AsRef<PerformanceMark> for PerformanceMark
sourcefn as_ref(&self) -> &PerformanceMark
fn as_ref(&self) -> &PerformanceMark
Converts this type into a shared reference of the (usually inferred) input type.
sourceimpl Clone for PerformanceMark
impl Clone for PerformanceMark
sourcefn clone(&self) -> PerformanceMark
fn clone(&self) -> PerformanceMark
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for PerformanceMark
impl Debug for PerformanceMark
sourceimpl Deref for PerformanceMark
impl Deref for PerformanceMark
type Target = PerformanceEntry
type Target = PerformanceEntry
The resulting type after dereferencing.
sourcefn deref(&self) -> &PerformanceEntry
fn deref(&self) -> &PerformanceEntry
Dereferences the value.
sourceimpl From<JsValue> for PerformanceMark
impl From<JsValue> for PerformanceMark
sourcefn from(obj: JsValue) -> PerformanceMark
fn from(obj: JsValue) -> PerformanceMark
Converts to this type from the input type.
sourceimpl From<PerformanceMark> for JsValue
impl From<PerformanceMark> for JsValue
sourcefn from(obj: PerformanceMark) -> JsValue
fn from(obj: PerformanceMark) -> JsValue
Converts to this type from the input type.
sourceimpl From<PerformanceMark> for Object
impl From<PerformanceMark> for Object
sourcefn from(obj: PerformanceMark) -> Object
fn from(obj: PerformanceMark) -> Object
Converts to this type from the input type.
sourceimpl From<PerformanceMark> for PerformanceEntry
impl From<PerformanceMark> for PerformanceEntry
sourcefn from(obj: PerformanceMark) -> PerformanceEntry
fn from(obj: PerformanceMark) -> PerformanceEntry
Converts to this type from the input type.
sourceimpl FromWasmAbi for PerformanceMark
impl FromWasmAbi for PerformanceMark
sourceimpl<'a> IntoWasmAbi for &'a PerformanceMark
impl<'a> IntoWasmAbi for &'a PerformanceMark
sourceimpl IntoWasmAbi for PerformanceMark
impl IntoWasmAbi for PerformanceMark
sourceimpl JsCast for PerformanceMark
impl JsCast for PerformanceMark
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) -> Self
fn unchecked_from_js(val: JsValue) -> Self
Performs a zero-cost unchecked conversion from a JsValue
into an
instance of Self
Read more
sourcefn unchecked_from_js_ref(val: &JsValue) -> &Self
fn unchecked_from_js_ref(val: &JsValue) -> &Self
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 OptionFromWasmAbi for PerformanceMark
impl OptionFromWasmAbi for PerformanceMark
sourceimpl<'a> OptionIntoWasmAbi for &'a PerformanceMark
impl<'a> OptionIntoWasmAbi for &'a PerformanceMark
sourceimpl OptionIntoWasmAbi for PerformanceMark
impl OptionIntoWasmAbi for PerformanceMark
sourceimpl PartialEq<PerformanceMark> for PerformanceMark
impl PartialEq<PerformanceMark> for PerformanceMark
sourcefn eq(&self, other: &PerformanceMark) -> bool
fn eq(&self, other: &PerformanceMark) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &PerformanceMark) -> bool
fn ne(&self, other: &PerformanceMark) -> bool
This method tests for !=
.
sourceimpl RefFromWasmAbi for PerformanceMark
impl RefFromWasmAbi for PerformanceMark
type Abi = <JsValue as RefFromWasmAbi>::Abi
type Abi = <JsValue as RefFromWasmAbi>::Abi
The wasm ABI type references to Self
are recovered from.
type Anchor = ManuallyDrop<PerformanceMark>
type Anchor = ManuallyDrop<PerformanceMark>
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: Self::Abi) -> Self::Anchor
unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor
Recover a Self::Anchor
from Self::Abi
. Read more
sourceimpl WasmDescribe for PerformanceMark
impl WasmDescribe for PerformanceMark
impl Eq for PerformanceMark
impl StructuralEq for PerformanceMark
impl StructuralPartialEq for PerformanceMark
Auto Trait Implementations
impl RefUnwindSafe for PerformanceMark
impl !Send for PerformanceMark
impl !Sync for PerformanceMark
impl Unpin for PerformanceMark
impl UnwindSafe for PerformanceMark
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