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This feature has been removed from the Web. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.


The deprecated unescape() method computes a new string in which hexadecimal escape sequences are replaced with the character that it represents. The escape sequences might be introduced by a function like escape. Because unescape is deprecated, use decodeURI or decodeURIComponent instead.

Note: Do not use unescape to decode URIs, use decodeURI instead.




A string to be decoded.


The unescape function is a property of the global object.


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


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

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

Last updated by: fscholz,