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)参数
arg被检测的语句。
返回值
如果给定的参数是 ArrayBuffer 视图之一则为真，否则为假。
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规范
Specification | Status | Comment |
|---|---|---|
Typed Array Specification | Obsolete | Superseded by ECMAScript 2015. |
ECMAScript 2015 (6th Edition, ECMA-262)The definition of 'ArrayBuffer.isView' in that specification. | Standard | Initial definition in an ECMA standard. |
ECMAScript Latest Draft (ECMA-262)The definition of 'ArrayBuffer.isView' in that specification. | Draft | ? |
浏览器兼容性
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | 29 (29) | 11 | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | 29.0 (29) | 11 | (Yes) | (Yes) |
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