The decodeURIComponent() function decodes a Uniform Resource Identifier (URI) component previously created by encodeURIComponent or by a similar routine.

Syntax

decodeURIComponent(encodedURI)

Parameters

encodedURI
An encoded component of a Uniform Resource Identifier.

Return value

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.

Description

Replaces each escape sequence in the encoded URI component with the character that it represents.

Examples

Decoding a Cyrillic URL component

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

Catching errors

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

// URIError: malformed URI sequence

Specifications

Specification Status Comment
ECMAScript 3rd Edition (ECMA-262) Standard Initial definition.
ECMAScript 5.1 (ECMA-262)
The definition of 'decodeURIComponent' in that specification.
Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'decodeURIComponent' in that specification.
Standard  
ECMAScript 2017 Draft (ECMA-262)
The definition of 'decodeURIComponent' in that specification.
Draft  

Browser compatibility

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

See also

Document Tags and Contributors

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 Last updated by: fscholz,