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Revision 695625 of unescape()

  • Revision slug: Web/JavaScript/Reference/Global_Objects/unescape
  • Revision title: unescape()
  • Revision id: 695625
  • Created:
  • Creator: fscholz
  • Is current revision? No
  • Comment

Revision Content

{{jsSidebar("Objects")}} {{deprecated_header()}}

Summary

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 {{jsxref("Global_Objects/escape", "escape")}}. Because unescape is deprecated, use {{jsxref("Global_Objects/decodeURI", "decodeURI")}} or {{jsxref("Global_Objects/decodeURIComponent", "decodeURIComponent")}} instead.

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

Syntax

unescape(str)

Parameters

str
A string to be decoded.

Description

The unescape function is a property of the global object.

Examples

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

Specifications

Specification Status Comment
ECMAScript 1st Edition. Standard Initial definition.
{{SpecName('ES5.1', '#sec-B.2.2', 'unescape')}} {{Spec2('ES5.1')}} Defined in the (informative) Compatibility Annex B
{{SpecName('ES6', '#sec-unescape-string', 'unescape')}} {{Spec2('ES6')}} Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers

Browser compatibility

{{ CompatibilityTable() }}

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

See also

  • {{jsxref("Global_Objects/decodeURI", "decodeURI")}}
  • {{jsxref("Global_Objects/decodeURIComponent", "decodeURIComponent")}}

Revision Source

<div>
 <div>
  <div>
   {{jsSidebar("Objects")}} {{deprecated_header()}}</div>
 </div>
</div>
<h2 id="Summary" name="Summary">Summary</h2>
<p>The deprecated <code><strong>unescape()</strong></code> 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 {{jsxref("Global_Objects/escape", "escape")}}. Because <code>unescape</code> is deprecated, use {{jsxref("Global_Objects/decodeURI", "decodeURI")}} or {{jsxref("Global_Objects/decodeURIComponent", "decodeURIComponent")}} instead.</p>
<div class="note">
 <strong>Note:</strong> Do not use <code>unescape</code> to decode URIs, use <code>decodeURI</code> instead.</div>
<h2 id="Syntax" name="Syntax">Syntax</h2>
<pre class="syntaxbox">
<code>unescape(str)</code></pre>
<h3 id="Parameters" name="Parameters">Parameters</h3>
<dl>
 <dt>
  <code>str</code></dt>
 <dd>
  A string to be decoded.</dd>
</dl>
<h2 id="Description" name="Description">Description</h2>
<p>The <code>unescape</code> function is a property of the <em>global object</em>.</p>
<h2 id="Examples">Examples</h2>
<pre class="brush: js">
unescape("abc123");     // "abc123"
unescape("%E4%F6%FC");  // "äöü"
unescape("%u0107");     // "ć"
</pre>
<h2 id="Specifications">Specifications</h2>
<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>ECMAScript 1st Edition.</td>
   <td>Standard</td>
   <td>Initial definition.</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-B.2.2', 'unescape')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td>Defined in the (informative) Compatibility Annex B</td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-unescape-string', 'unescape')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td>Defined in the (normative) Annex B for Additional ECMAScript Features for Web Browsers</td>
  </tr>
 </tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p>{{ CompatibilityTable() }}</p>
<div id="compat-desktop">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Chrome</th>
    <th>Firefox (Gecko)</th>
    <th>Internet Explorer</th>
    <th>Opera</th>
    <th>Safari</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<div id="compat-mobile">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Android</th>
    <th>Chrome for Android</th>
    <th>Firefox Mobile (Gecko)</th>
    <th>IE Mobile</th>
    <th>Opera Mobile</th>
    <th>Safari Mobile</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<h2 id="See_Also" name="See_Also">See also</h2>
<ul>
 <li>{{jsxref("Global_Objects/decodeURI", "decodeURI")}}</li>
 <li>{{jsxref("Global_Objects/decodeURIComponent", "decodeURIComponent")}}</li>
</ul>
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