pub struct AbortSignal { /* private fields */ }
Expand description

An interface representing a signal that can be passed to cancellable operations, primarily a Fetch request.

Implementations§

A bool indicating if the operation that the signal is used for has been aborted.

The reason why the signal was aborted.

Creates a AbortSignal that is already aborted.

Creates a AbortSignal that is already aborted with the provided reason.

Methods from Deref<Target = AbortSignalSys>§

Methods from Deref<Target = Object>§

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

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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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The isPrototypeOf() method checks if an object exists in another object’s prototype chain.

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

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

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

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Methods from Deref<Target = JsValue>§

👎Deprecated: causes dependency cycles, use serde-wasm-bindgen or gloo_utils::format::JsValueSerdeExt instead

Invokes JSON.stringify on this value and then parses the resulting JSON into an arbitrary Rust value.

This function is deprecated, due to creating a dependency cycle in some circumstances. Use serde-wasm-bindgen or gloo_utils::format::JsValueSerdeExt instead.

This function will first call JSON.stringify on the JsValue itself. The resulting string is then passed into Rust which then parses it as JSON into the resulting value.

Usage of this API requires activating the serde-serialize feature of the wasm-bindgen crate.

Errors

Returns any error encountered when parsing the JSON into a T.

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.

Tests whether this JS value is a JS 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.

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.

Tests whether this JS value is null

Tests whether this JS value is undefined

Tests whether the type of this JS value is symbol

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

Tests whether the type of this JS value is function.

Tests whether the type of this JS value is bigint.

Applies the unary typeof JS operator on a JsValue.

MDN documentation

Applies the binary in JS operator on the two JsValues.

MDN documentation

Tests whether the value is “truthy”.

Tests whether the value is “falsy”.

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

MDN documentation

Applies the unary ~ JS operator on a JsValue.

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

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

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

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Applies the binary < JS operator on the two JsValues.

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

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

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Applies the binary > JS operator on the two JsValues.

MDN documentation

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

MDN documentation

Trait Implementations§

Formats the value using the given formatter. Read more
The resulting type after dereferencing.
Dereferences the value.
Converts to this type from the input type.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.