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Warning: Although
escape() is not strictly deprecated (as in "removed from the Web standards"), it is defined in Annex B of the ECMA-262 standard, whose introduction states:
… All of the language features and behaviours specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification. …
… Programmers should not use or assume the existence of these features and behaviours when writing new ECMAScript code. …
The escape() function computes a new string in which certain characters have been replaced by a hexadecimal escape sequence.
Syntax
escape(str)
Parameters
str- A string to be encoded.
Return value
A new string in which certain characters have been escaped.
Description
The escape function is a property of the global object. Special characters are encoded with the exception of: @*_+-./
The hexadecimal form for characters, whose code unit value is 0xFF or less, is a two-digit escape sequence: %xx. For characters with a greater code unit, the four-digit format %uxxxx is used.
Examples
escape('abc123'); // "abc123"
escape('äöü'); // "%E4%F6%FC"
escape('ć'); // "%u0107"
// special characters
escape('@*_+-./'); // "@*_+-./"
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. |
| ECMAScript 5.1 (ECMA-262) The definition of 'escape' in that specification. |
Standard | Defined in the (informative) Compatibility Annex B |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'escape' in that specification. |
Standard | Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers |
| ECMAScript Latest Draft (ECMA-262) The definition of 'escape' in that specification. |
Draft | Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers |
Browser compatibility
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.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | 1 | Yes | Yes | Yes |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | Yes | 4 | Yes | Yes | Yes |
See also
Document Tags and Contributors
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TSlivede,
fscholz,
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stevenwdv,
jameshkramer,
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nmve,
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