Struct web_sys::MutationObserver [−][src]
The MutationObserver
class.
This API requires the following crate features to be activated: MutationObserver
Implementations
impl MutationObserver
[src]
pub fn new(mutation_callback: &Function) -> Result<MutationObserver, JsValue>
[src]
The new MutationObserver(..)
constructor, creating a new instance of MutationObserver
.
This API requires the following crate features to be activated: MutationObserver
impl MutationObserver
[src]
pub fn disconnect(&self)
[src]
The disconnect()
method.
This API requires the following crate features to be activated: MutationObserver
impl MutationObserver
[src]
pub fn observe(&self, target: &Node) -> Result<(), JsValue>
[src]
The observe()
method.
This API requires the following crate features to be activated: MutationObserver
, Node
impl MutationObserver
[src]
pub fn observe_with_options(
&self,
target: &Node,
options: &MutationObserverInit
) -> Result<(), JsValue>
[src]
&self,
target: &Node,
options: &MutationObserverInit
) -> Result<(), JsValue>
The observe()
method.
This API requires the following crate features to be activated: MutationObserver
, MutationObserverInit
, Node
impl MutationObserver
[src]
pub fn take_records(&self) -> Array
[src]
The takeRecords()
method.
This API requires the following crate features to be activated: MutationObserver
Methods from Deref<Target = Object>
pub fn constructor(&self) -> Function
[src]
The constructor property returns a reference to the Object
constructor
function that created the instance object.
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).
pub fn is_prototype_of(&self, value: &JsValue) -> bool
[src]
The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
pub fn property_is_enumerable(&self, property: &JsValue) -> bool
[src]
The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
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.
pub fn to_string(&self) -> JsString
[src]
The toString()
method returns a string representing the object.
pub fn value_of(&self) -> Object
[src]
The valueOf()
method returns the primitive value of the
specified object.
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”.
Trait Implementations
impl AsRef<JsValue> for MutationObserver
[src]
impl AsRef<MutationObserver> for MutationObserver
[src]
fn as_ref(&self) -> &MutationObserver
[src]
impl AsRef<Object> for MutationObserver
[src]
impl Clone for MutationObserver
[src]
fn clone(&self) -> MutationObserver
[src]
pub fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl Debug for MutationObserver
[src]
impl Deref for MutationObserver
[src]
impl Eq for MutationObserver
[src]
impl From<JsValue> for MutationObserver
[src]
fn from(obj: JsValue) -> MutationObserver
[src]
impl From<MutationObserver> for JsValue
[src]
fn from(obj: MutationObserver) -> JsValue
[src]
impl From<MutationObserver> for Object
[src]
fn from(obj: MutationObserver) -> Object
[src]
impl FromWasmAbi for MutationObserver
[src]
type Abi = <JsValue as FromWasmAbi>::Abi
The wasm ABI type that this converts from when coming back out from the ABI boundary. Read more
unsafe fn from_abi(js: Self::Abi) -> Self
[src]
impl IntoWasmAbi for MutationObserver
[src]
type Abi = <JsValue as IntoWasmAbi>::Abi
The wasm ABI type that this converts into when crossing the ABI boundary. Read more
fn into_abi(self) -> Self::Abi
[src]
impl<'a> IntoWasmAbi for &'a MutationObserver
[src]
type Abi = <&'a JsValue as IntoWasmAbi>::Abi
The wasm ABI type that this converts into when crossing the ABI boundary. Read more
fn into_abi(self) -> Self::Abi
[src]
impl JsCast for MutationObserver
[src]
fn instanceof(val: &JsValue) -> bool
[src]
fn unchecked_from_js(val: JsValue) -> Self
[src]
fn unchecked_from_js_ref(val: &JsValue) -> &Self
[src]
pub fn has_type<T>(&self) -> bool where
T: JsCast,
[src]
T: JsCast,
pub fn dyn_into<T>(self) -> Result<T, Self> where
T: JsCast,
[src]
T: JsCast,
pub fn dyn_ref<T>(&self) -> Option<&T> where
T: JsCast,
[src]
T: JsCast,
pub fn unchecked_into<T>(self) -> T where
T: JsCast,
[src]
T: JsCast,
pub fn unchecked_ref<T>(&self) -> &T where
T: JsCast,
[src]
T: JsCast,
pub fn is_instance_of<T>(&self) -> bool where
T: JsCast,
[src]
T: JsCast,
pub fn is_type_of(val: &JsValue) -> bool
[src]
impl OptionFromWasmAbi for MutationObserver
[src]
impl OptionIntoWasmAbi for MutationObserver
[src]
impl<'a> OptionIntoWasmAbi for &'a MutationObserver
[src]
impl PartialEq<MutationObserver> for MutationObserver
[src]
fn eq(&self, other: &MutationObserver) -> bool
[src]
fn ne(&self, other: &MutationObserver) -> bool
[src]
impl RefFromWasmAbi for MutationObserver
[src]
type Abi = <JsValue as RefFromWasmAbi>::Abi
The wasm ABI type references to Self
are recovered from.
type Anchor = ManuallyDrop<MutationObserver>
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
unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor
[src]
impl StructuralEq for MutationObserver
[src]
impl StructuralPartialEq for MutationObserver
[src]
impl WasmDescribe for MutationObserver
[src]
Auto Trait Implementations
impl RefUnwindSafe for MutationObserver
impl !Send for MutationObserver
impl !Sync for MutationObserver
impl Unpin for MutationObserver
impl UnwindSafe for MutationObserver
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
[src]
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T> ReturnWasmAbi for T where
T: IntoWasmAbi,
[src]
T: IntoWasmAbi,
type Abi = <T as IntoWasmAbi>::Abi
Same as IntoWasmAbi::Abi
pub fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
[src]
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
[src]
pub fn clone_into(&self, target: &mut T)
[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,