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 2015年7月.
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
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