slice()方法返回一个新的 ArrayBuffer ,它的内容是这个ArrayBuffer的字节副本,从begin(包括),到end(不包括)。

语法

arraybuffer.slice(begin[, end])

参数

begin
从零开始的字节索引,切片从这开始。
end
结束切片的字节索引。如果没指定end,新的 ArrayBuffer 将包含这个 ArrayBuffer 从头到尾的所有字节。由begin和end指定的这个范围夹在当前数组的有效索引范围内。如果新ArrayBuffer的长度在计算后为负,它将强制为0 。

返回值

 一个新的 ArrayBuffer 对象。

描述

slice 方法复制到但不包括由end参数指示的字节。如果begin或end是负数,则指的是从数组末尾开始的索引,而不是从头开始。

示例

复制一个 ArrayBuffer

var buf1 = new ArrayBuffer(8);
var buf2 = buf1.slice(0);

规范

Specification Status Comment
Typed Array Specification Obsolete Superseded by EMCAScript 6.
ECMAScript 2015 (6th Edition, ECMA-262)
ArrayBuffer.prototype.slice
Standard Initial definition in an ECMA standard.
ECMAScript Latest Draft (ECMA-262)
ArrayBuffer.prototype.slice
Draft  

浏览器兼容性

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 12
Notes
Full support 12
Notes
Notes The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.
IE Full support 11Opera Full support YesSafari Full support 6WebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 14
Notes
Full support 14
Notes
Notes The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.
Opera Android Full support YesSafari iOS Full support 6Samsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support
See implementation notes.
See implementation notes.

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