JavaScript ArrayBuffer isView() 方法的总结
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本文目录结构
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
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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| Typed Array Specification | Obsolete | Superseded by ECMAScript 6.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](https://www.ecma-international.org/ecma-262/6.0/#sec-arraybuffer.isview) | Standard | Initial definition in an ECMA standard. |
浏览器兼容性
The compatibility table on this page is generated from structured data. If you’d like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | Server | |
|---|---|---|---|
| Chrome | Edge | Firefox | |
| — | — | — | — |
isView |
Chrome Full support Yes | Edge Full support 12 | Firefox Full support 29 |
Legend
Full support
Full support
