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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






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


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Typed Array Specification Obsolete Superseded by ECMAScript 6.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

Browser compatibility(浏览器兼容性)

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) 29 (29) 11 (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) 29.0 (29) 11 (Yes) (Yes)

See also(另见参考文档)


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