已废弃的unescape() 方法计算生成一个新的字符串，其中的十六进制转义序列将被其表示的字符替换。上述的转义序列就像escape里介绍的一样。因为 unescape 已经废弃，建议使用 decodeURI或者decodeURIComponent 替代本方法。

注意：不要使用unescape去解码URLS，使用decodeURI替代。

语法

unescape(str)

描述

unescape函数是全局对象的一个属性。

unescape('abc123');     // "abc123"
unescape('%E4%F6%FC');  // "äöü"
unescape('%u0107');     // "ć"

Specification	Status	Comment
ECMAScript 1st Edition (ECMA-262) unescape	Standard	Initial definition.
ECMAScript 5.1 (ECMA-262) unescape	Standard	Defined in the (informative) Compatibility Annex B
ECMAScript 2015 (6th Edition, ECMA-262) unescape	Standard	Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers
ECMAScript Latest Draft (ECMA-262) unescape	Draft	Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers

	Desktop						Mobile							Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`unescape` Deprecated	Chrome Full support Yes	Edge Full support Yes	Firefox Full support 1	IE Full support Yes	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Edge Mobile Full support Yes	Firefox Android Full support 4	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes	nodejs Full support Yes

Full support: Full support
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.