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)。
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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Typed Array Specification | Obsolete | Superseded by EMCAScript 6.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
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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
slice |
Chrome Full support 17 | Edge Full support 12 | Firefox Full support 12
|
IE Full support 11 | Opera Full support Yes | Safari Full support 6 | WebView Android Full support ≤37 | Chrome Android Full support 18 | Firefox Android Full support 14
|
Opera Android Full support Yes | Safari iOS Full support 6 | Samsung Internet Android Full support 1.0 | nodejs Full support Yes |
Legend
- Full support
- Full support
- See implementation notes.
- See implementation notes.