ArrayBuffer.isView
Returns true if the provided value is one of the ArrayBuffer views (typed array or DataView)
Syntax
ArrayBuffer.isView(value)Parameters
| Parameter | Type | Description |
|---|---|---|
| value | any | The value to check |
Return Value
true if the value is an ArrayBuffer view, false otherwise
Examples
console.log(ArrayBuffer.isView(new Uint8Array())) // true
console.log(ArrayBuffer.isView(new DataView(new ArrayBuffer(8)))) // true
console.log(ArrayBuffer.isView(new ArrayBuffer(8))) // falseconsole.log(ArrayBuffer.isView([])) // false
console.log(ArrayBuffer.isView(new Float32Array(3))) // truefunction processData(data: unknown) {
if (ArrayBuffer.isView(data)) {
console.log('TypedArray or DataView, bytes:', data.byteLength)
} else if (data instanceof ArrayBuffer) {
console.log('Raw ArrayBuffer, bytes:', data.byteLength)
}
}Understanding ArrayBuffer.isView
The ArrayBuffer.isView method in JavaScript returns true if the provided value is one of the ArrayBuffer views (typed array or DataView). It belongs to the ArrayBuffer object and is one of the most widely used methods for working with arraybuffer values in modern JavaScript and TypeScript applications.
The method signature is ArrayBuffer.isView(value). It accepts 1 parameter: value. When called, it returns true if the value is an arraybuffer view, false otherwise. Understanding when and how to use isView() helps you write more expressive, readable code.
Common use cases for ArrayBuffer.isView include data transformation, input validation, API response processing, and building reusable utility functions. It works well alongside related methods like arraybuffer-constructor, uint8array-constructor, dataview-constructor, enabling you to chain operations together for complex data manipulation pipelines.
Browser support for ArrayBuffer.isView is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. It is also fully supported in Node.js and Deno. For older environments, transpilation with Babel or a polyfill may be needed.
Browser Compatibility
Supported in all modern browsers (Chrome, Firefox, Safari, Edge) and Node.js. Part of the ECMAScript standard.
Related Methods
ArrayBufferCreates a new ArrayBuffer of the given length in bytes, with contents initialized to zero
Uint8ArrayCreates a new Uint8Array typed array representing an array of 8-bit unsigned integers initialized to zero
DataViewCreates a new DataView providing a low-level interface for reading and writing multiple number types in an ArrayBuffer
More ArrayBuffer Methods
Other methods in the ArrayBuffer object
Related Tools
More ArrayBuffer Methods
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