files/zh-cn/web/exslt/regexp/match/index.html


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---
title: match
slug: Web/EXSLT/regexp/match
translation_of: Web/EXSLT/regexp/match
---
<p>{{ XsltRef() }} {{ Fx_minversion_header(3) }}</p>

<p><br>
 <code>regexp:match()</code> performs regular expression matching on a string, returning the submatches found as a result.</p>

<h3 id="Syntax" name="Syntax">语法</h3>

<pre class="eval">regexp:match(<em>targetString</em>,<em>regExpString</em>[[,<em>flagsString</em>]])
</pre>

<h3 id="Arguments" name="Arguments">参数</h3>

<dl>
 <dt><code><em>targetString</em></code></dt>
 <dd>The string to perform regular expression matching upon.</dd>
 <dt><code><em>regExpString</em></code></dt>
 <dd>The JavaScript style regular expression to evaluate.</dd>
 <dt><code><em>flagsString</em></code></dt>
 <dd>An optional string containing character flags.</dd>
</dl>

<p>The character flags are:</p>

<dl>
 <dt><code>g</code></dt>
 <dd>全局匹配</dd>
 <dd>The submatches from every match in the string are returned. If this flag isn't specified, only the submatches from the first match are returned.</dd>
 <dt><code>i</code></dt>
 <dd>Case insensitive match</dd>
 <dd>If this flag is specified, the match is performed in a case insensitive fashion.</dd>
</dl>

<h3 id="Returns" name="Returns">Returns</h3>

<p>A node set of <code>match</code> elements, each of which has the string value equal to a portion of the first parameter string as captured by the regular expression. If the match isn't a global one, the first match element has the value of the portion of the string matched by the entire regular expression.</p>

<p>例如:</p>

<pre class="eval">&lt;xsl:for-each select="regExp:match('<span class="nowiki">http://developer.mozilla.org/en/docs/Firefox_3_for_developers</span>',
                                   '(\w+):\/\/([^/:]+)(:\d*)?([^# ]*)')"&gt;
   Part &lt;xsl:value-of select="position()" /&gt; = &lt;xsl:value-of select="." /&gt;
&lt;/xsl:for-each&gt;
</pre>

<p>This code generates the following output:</p>

<pre class="eval">Part 1 = <span class="nowiki">http://developer.mozilla.org/en/docs/Firefox_3_for_developers</span>
Part 2 = http
Part 3 = developer.mozilla.org
Part 4 =
Part 5 = /en/docs/Firefox_3_for_developers
</pre>

<h3 id="Defined" name="Defined">定义</h3>

<p><a class="external" href="http://www.exslt.org/regexp/functions/match/index.html">EXSLT - REGEXP:MATCH</a></p>

<h3 id="Gecko_support" name="Gecko_support">Gecko support</h3>

<p>Supported in Gecko 1.9 and later.</p>

<div class="noinclude"> </div>

<p>{{ languages( { "es": "es/EXSLT/regexp/match", "fr": "fr/EXSLT/regexp/match" } ) }}</p>