---
title: escape 和 unescape 函數
slug: conflicting/Web/JavaScript/Guide/Functions_ceaa4b2a55bb67388c2728af1ff890f5
translation_of: Web/JavaScript/Guide/Functions
translation_of_original: >-
  Web/JavaScript/Guide/Obsolete_Pages/Predefined_Functions/escape_and_unescape_Functions
original_slug: >-
  Web/JavaScript/Obsolete_Pages/Obsolete_Pages/Obsolete_Pages/預先定義的函數/escape_和_unescape_函數
---
<p> </p>
<div class="onlyinclude">
<h4 id="escape_和_unescape_函數">escape 和 unescape 函數</h4>
<p><code>escape</code> 和 <code>unescape</code> 函數可讓你把字串編碼或解碼。<code>escape</code> 函數會返回以 ISO Latin 字元集來表示參數的十六進制編碼。<code>unescape</code> 函數會對指定的十六進制編碼值返回 ASCII 字串。</p>
<p>這些函數的語句是︰</p>
<pre>escape(string)
unescape(string)
</pre>
<p>這些函數主要是在伺服端的 JavaScript 用來編碼或解碼 URL 裡的名稱和值的配對。</p>
<p><code>escape</code> 和 <code>unescape</code> 函數在非 ASCII 字元下無法正確運作，也已被廢棄。在 JavaScript 1.5 及其後版本中，可以改用 <code><a class="internal" href="/zh_tw/Core_JavaScript_1.5_%E5%8F%83%E8%80%83/%E5%85%A8%E5%9F%9F%E5%87%BD%E6%95%B8/encodeURI" title="zh tw/Core JavaScript 1.5 參考/全域函數/encodeURI">encodeURI</a></code>、<code><a class="internal" href="/zh_tw/Core_JavaScript_1.5_%E5%8F%83%E8%80%83/%E5%85%A8%E5%9F%9F%E5%87%BD%E6%95%B8/decodeURI" title="zh tw/Core JavaScript 1.5 參考/全域函數/decodeURI">decodeURI</a></code>、<code><a class="internal" href="/zh_tw/Core_JavaScript_1.5_%E5%8F%83%E8%80%83/%E5%85%A8%E5%9F%9F%E5%87%BD%E6%95%B8/encodeURIComponent" title="zh tw/Core JavaScript 1.5 參考/全域函數/encodeURIComponent">encodeURIComponent</a></code>、<code><a class="internal" href="/zh_tw/Core_JavaScript_1.5_%E5%8F%83%E8%80%83/%E5%85%A8%E5%9F%9F%E5%87%BD%E6%95%B8/decodeURIComponent" title="zh tw/Core JavaScript 1.5 參考/全域函數/decodeURIComponent">decodeURIComponent</a></code>。</p>
</div>
<p>{{ PreviousNext("Core_JavaScript_1.5_教學:預先定義的函數:Number_和_String_函數", "Core_JavaScript_1.5_教學:閉鎖的運用") }}</p>
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