Struct web_sys::Attr

#[repr(transparent)]pub struct Attr { /* fields omitted */ }

The Attr class.

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

Implementations

impl Attr

pub fn local_name(&self) -> String

Getter for the localName field of this object.

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

impl Attr

pub fn value(&self) -> String

Getter for the value field of this object.

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

impl Attr

pub fn set_value(&self, value: &str)

Setter for the value field of this object.

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

impl Attr

pub fn name(&self) -> String

Getter for the name field of this object.

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

impl Attr

pub fn namespace_uri(&self) -> Option<String>

Getter for the namespaceURI field of this object.

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

impl Attr

pub fn prefix(&self) -> Option<String>

Getter for the prefix field of this object.

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

impl Attr

pub fn specified(&self) -> bool

Getter for the specified field of this object.

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

Methods from Deref<Target = Node>

pub fn node_type(&self) -> u16

Getter for the nodeType field of this object.

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

pub fn node_name(&self) -> String

Getter for the nodeName field of this object.

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

pub fn base_uri(&self) -> Result<Option<String>, JsValue>

Getter for the baseURI field of this object.

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

pub fn is_connected(&self) -> bool

Getter for the isConnected field of this object.

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

pub fn owner_document(&self) -> Option<Document>

Getter for the ownerDocument field of this object.

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This API requires the following crate features to be activated: Document, Node

pub fn parent_node(&self) -> Option<Node>

Getter for the parentNode field of this object.

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

pub fn parent_element(&self) -> Option<Element>

Getter for the parentElement field of this object.

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This API requires the following crate features to be activated: Element, Node

pub fn child_nodes(&self) -> NodeList

Getter for the childNodes field of this object.

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This API requires the following crate features to be activated: Node, NodeList

pub fn first_child(&self) -> Option<Node>

Getter for the firstChild field of this object.

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

pub fn last_child(&self) -> Option<Node>

Getter for the lastChild field of this object.

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

pub fn previous_sibling(&self) -> Option<Node>

Getter for the previousSibling field of this object.

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

pub fn next_sibling(&self) -> Option<Node>

Getter for the nextSibling field of this object.

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

pub fn node_value(&self) -> Option<String>

Getter for the nodeValue field of this object.

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

pub fn set_node_value(&self, value: Option<&str>)

Setter for the nodeValue field of this object.

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

pub fn text_content(&self) -> Option<String>

Getter for the textContent field of this object.

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

pub fn set_text_content(&self, value: Option<&str>)

Setter for the textContent field of this object.

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

pub fn append_child(&self, node: &Node) -> Result<Node, JsValue>

The appendChild() method.

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

pub fn clone_node(&self) -> Result<Node, JsValue>

The cloneNode() method.

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

pub fn clone_node_with_deep(&self, deep: bool) -> Result<Node, JsValue>

The cloneNode() method.

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

pub fn compare_document_position(&self, other: &Node) -> u16

The compareDocumentPosition() method.

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

pub fn contains(&self, other: Option<&Node>) -> bool

The contains() method.

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

pub fn get_root_node(&self) -> Node

The getRootNode() method.

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

pub fn get_root_node_with_options(&self, options: &GetRootNodeOptions) -> Node

The getRootNode() method.

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This API requires the following crate features to be activated: GetRootNodeOptions, Node

pub fn has_child_nodes(&self) -> bool

The hasChildNodes() method.

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

pub fn insert_before(
    &self,
    node: &Node,
    child: Option<&Node>
) -> Result<Node, JsValue>

The insertBefore() method.

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

pub fn is_default_namespace(&self, namespace: Option<&str>) -> bool

The isDefaultNamespace() method.

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

pub fn is_equal_node(&self, node: Option<&Node>) -> bool

The isEqualNode() method.

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

pub fn is_same_node(&self, node: Option<&Node>) -> bool

The isSameNode() method.

MDN Documentation

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

pub fn lookup_namespace_uri(&self, prefix: Option<&str>) -> Option<String>

The lookupNamespaceURI() method.

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

pub fn lookup_prefix(&self, namespace: Option<&str>) -> Option<String>

The lookupPrefix() method.

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

pub fn normalize(&self)

The normalize() method.

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

pub fn remove_child(&self, child: &Node) -> Result<Node, JsValue>

The removeChild() method.

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

pub fn replace_child(&self, node: &Node, child: &Node) -> Result<Node, JsValue>

The replaceChild() method.

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

pub const ELEMENT_NODE: u16

pub const ATTRIBUTE_NODE: u16

pub const TEXT_NODE: u16

pub const CDATA_SECTION_NODE: u16

pub const ENTITY_REFERENCE_NODE: u16

pub const ENTITY_NODE: u16

pub const PROCESSING_INSTRUCTION_NODE: u16

pub const COMMENT_NODE: u16

pub const DOCUMENT_NODE: u16

pub const DOCUMENT_TYPE_NODE: u16

pub const DOCUMENT_FRAGMENT_NODE: u16

pub const NOTATION_NODE: u16

pub const DOCUMENT_POSITION_DISCONNECTED: u16

pub const DOCUMENT_POSITION_PRECEDING: u16

pub const DOCUMENT_POSITION_FOLLOWING: u16

pub const DOCUMENT_POSITION_CONTAINS: u16

pub const DOCUMENT_POSITION_CONTAINED_BY: u16

pub const DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: u16

Methods from Deref<Target = EventTarget>

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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>

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.

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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_function(&self) -> bool

Tests whether the type of this JS value is function.

pub fn is_truthy(&self) -> bool

Tests whether the value is “truthy”.

pub fn is_falsy(&self) -> bool

Tests whether the value is “falsy”.

Trait Implementations

impl AsRef<Attr> for Attr

fn as_ref(&self) -> &Attr

Performs the conversion.

impl AsRef<EventTarget> for Attr

fn as_ref(&self) -> &EventTarget

Performs the conversion.

impl AsRef<JsValue> for Attr

fn as_ref(&self) -> &JsValue

Performs the conversion.

impl AsRef<Node> for Attr

fn as_ref(&self) -> &Node

Performs the conversion.

impl AsRef<Object> for Attr

fn as_ref(&self) -> &Object

Performs the conversion.

impl Clone for Attr

fn clone(&self) -> Attr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Attr

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

Formats the value using the given formatter.

impl Deref for Attr

type Target = Node

The resulting type after dereferencing.

fn deref(&self) -> &Node

Dereferences the value.

impl Eq for Attr

impl From<Attr> for JsValue

fn from(obj: Attr) -> JsValue

Performs the conversion.

impl From<Attr> for Node

fn from(obj: Attr) -> Node

Performs the conversion.

impl From<Attr> for EventTarget

fn from(obj: Attr) -> EventTarget

Performs the conversion.

impl From<Attr> for Object

fn from(obj: Attr) -> Object

Performs the conversion.

impl From<JsValue> for Attr

fn from(obj: JsValue) -> Attr

Performs the conversion.

impl FromWasmAbi for Attr

type Abi = <JsValue as FromWasmAbi>::Abi

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

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

Recover a Self from Self::Abi.

impl IntoWasmAbi for Attr

type Abi = <JsValue as IntoWasmAbi>::Abi

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

fn into_abi(self) -> Self::Abi

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

impl<'a> IntoWasmAbi for &'a Attr

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

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

fn into_abi(self) -> Self::Abi

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

impl JsCast for Attr

fn instanceof(val: &JsValue) -> bool

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

fn unchecked_from_js(val: JsValue) -> Self

Performs a zero-cost unchecked conversion from a JsValue into an instance of Self

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

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

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

Test whether this JS value has a type T.

pub 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.

pub 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.

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

Performs a zero-cost unchecked cast into the specified type.

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

Performs a zero-cost unchecked cast into a reference to the specified type.

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

Test whether this JS value is an instance of the type T.

pub fn is_type_of(val: &JsValue) -> bool

Performs a dynamic check to see whether the JsValue provided is a value of this type.

impl OptionFromWasmAbi for Attr

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.

impl OptionIntoWasmAbi for Attr

fn none() -> Self::Abi

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

impl<'a> OptionIntoWasmAbi for &'a Attr

fn none() -> Self::Abi

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

impl PartialEq<Attr> for Attr

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

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

fn ne(&self, other: &Attr) -> bool

This method tests for !=.

impl RefFromWasmAbi for Attr

type Abi = <JsValue as RefFromWasmAbi>::Abi

The wasm ABI type references to Self are recovered from.

type Anchor = ManuallyDrop<Attr>

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.

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

Recover a Self::Anchor from Self::Abi.

impl StructuralEq for Attr

impl StructuralPartialEq for Attr

impl WasmDescribe for Attr

fn describe()