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Typed Array Specification Obsolete Superseded by ECMAScript 6.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
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
isViewChrome Full support 32Edge Full support 12Firefox Full support 29IE Full support 11Opera Full support YesSafari Full support YesWebView Android Full support ≤37Chrome Android Full support 32Firefox Android Full support 29Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support 2.0nodejs Full support Yes

Legend

Full support  
Full support

另见参考文档

相关主题
  1. JavaScript 标准库
  2. ArrayBuffer
  3. 属性
    1. ArrayBuffer.prototype
    2. ArrayBuffer.prototype.byteLength
    3. get ArrayBuffer[@@species]
  4. 方法
    1. ArrayBuffer.isView()
    2. ArrayBuffer.prototype.slice()
    3. ArrayBuffer.transfer()
  5. 继承
  6. Function
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    2. Function.arity
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