ArrayBuffer.isView()

The ArrayBuffer.isView() 方法当arg是一个ArrayBuffer的视图就返回true, 例如类型化数组对象(typed array objects )或者一个数据视图(a DataView); 否则返回false.

判断是否为ArrayBuffer的视图类实例，包括 typed array objects（类型化数组对象）和 a DataView

语法

ArrayBuffer.isView(arg)

Parameters（参数）

arg 被检测的语句。

示例

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

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

说明文档

Specification（说明书）	Status（状态）	Comment（备注）
Typed Array Specification	Obsolete	Superseded by ECMAScript 6.
ECMAScript 2015 (6th Edition, ECMA-262) ArrayBuffer.isView	Standard	Initial definition in an ECMA standard.

浏览器兼容性

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`isView`	Chrome Full support 32	Edge Full support 12	Firefox Full support 29	IE Full support 11	Opera Full support Yes	Safari Full support Yes	WebView Android Full support ≤37	Chrome Android Full support 32	Firefox Android Full support 29	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support 2.0	nodejs Full support Yes

Legend

Full support: Full support

另见参考文档

JavaScript typed arrays