decodeURIComponent() 方法用于解码由 encodeURIComponent 方法或者其它类似方法编码的部分统一资源标识符(URI)。

语法

decodeURIComponent(encodedURI)

参数

encodedURI
编码后的部分 URI

返回值

A new string representing the decoded version of the given encoded Uniform Resource Identifier (URI) component.

Exceptions

Throws an URIError ("malformed URI sequence") exception when used wrongly.

描述

将已编码 URI 中所有能识别的转义序列转换成原字符。

示例

解码一个西里尔字母的URL

decodeURIComponent("JavaScript_%D1%88%D0%B5%D0%BB%D0%BB%D1%8B");
// "JavaScript_шеллы"

捕捉异常

try { 
  var a = decodeURIComponent('%E0%A4%A'); 
} catch(e) { 
  console.error(e); 
}

// URIError: malformed URI sequence

规范

规范 状态 备注
ECMAScript 3rd Edition (ECMA-262) Standard 初始定义
ECMAScript 5.1 (ECMA-262)
decodeURIComponent
Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
decodeURIComponent
Standard  
ECMAScript Latest Draft (ECMA-262)
decodeURIComponent
Draft  

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