ArrayBuffer.isView()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

ArrayBuffer.isView() 静态方法判断传入值是否是 ArrayBuffer 视图之一，例如类型化数组对象或 DataView。

尝试一下

// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);

console.log(ArrayBuffer.isView(new Int32Array()));
// Expected output: true

语法

js
ArrayBuffer.isView(value)

参数

value

要检查的值。

返回值

如果给定参数是 ArrayBuffer 视图之一则返回 true；否则返回 false。

示例

使用 isView

js
ArrayBuffer.isView(); // false
ArrayBuffer.isView([]); // false
ArrayBuffer.isView({}); // false
ArrayBuffer.isView(null); // false
ArrayBuffer.isView(undefined); // false
ArrayBuffer.isView(new ArrayBuffer(10)); // false

ArrayBuffer.isView(new Uint8Array()); // true
ArrayBuffer.isView(new Float32Array()); // true
ArrayBuffer.isView(new Int8Array(10).subarray(0, 3)); // true

const buffer = new ArrayBuffer(2);
const dv = new DataView(buffer);
ArrayBuffer.isView(dv); // true

规范

Specification
ECMAScript® 2026 Language Specification
# sec-arraybuffer.isview

浏览器兼容性

参见