Struct TreeWalker 

pub struct TreeWalker { /* private fields */ }

The TreeWalker class.

MDN Documentation

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

Implementations

impl TreeWalker

pub fn root(&self) -> Node

Getter for the root field of this object.

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

impl TreeWalker

pub fn what_to_show(&self) -> u32

Getter for the whatToShow field of this object.

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

impl TreeWalker

pub fn filter(&self) -> Option<NodeFilter>

Getter for the filter field of this object.

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This API requires the following crate features to be activated: NodeFilter, TreeWalker

impl TreeWalker

pub fn current_node(&self) -> Node

Getter for the currentNode field of this object.

MDN Documentation

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

impl TreeWalker

pub fn set_current_node(&self, value: &Node)

Setter for the currentNode field of this object.

MDN Documentation

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

impl TreeWalker

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

The firstChild() method.

MDN Documentation

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

impl TreeWalker

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

The lastChild() method.

MDN Documentation

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

impl TreeWalker

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

The nextNode() method.

MDN Documentation

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

impl TreeWalker

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

The nextSibling() method.

MDN Documentation

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

impl TreeWalker

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

The parentNode() method.

MDN Documentation

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

impl TreeWalker

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

The previousNode() method.

MDN Documentation

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

impl TreeWalker

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

The previousSibling() method.

MDN Documentation

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

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).

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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.

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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.

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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