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    <pre><code>&lt;?php $referenceStr = "&lt;td width=120 valign=\"top\"&gt; &lt;div style=\"height:135px; border:1px solid #BBBBBB; background:#BBBBBB; margin-left:2px; text-align:center; \"&gt; &lt;a href=\"/now/episodes.php?name=path&amp;id=4000&amp;sid=12345&amp;page=0\"&gt;&lt;img border=\"0\" src=\"http://www.somesite.com/1234.jpg\" width=\"150\" height=\"83\"&gt;&lt;/a&gt;&lt;br&gt; &lt;font face=\"Tahoma\" size=\"2\"&gt;&lt;b&gt;Star Album&lt;/b&gt;&lt;br/&gt; episode 4 &lt;/font&gt; &lt;/div&gt; &lt;/td&gt;"; $key = 'sid'; preg_match('/(?:&amp;|(\?))' . $key . '=[^&amp;]*(?(1)&amp;|)?/i', $referenceStr,$matches); foreach($matches as $k =&gt; $v) $matches[$k] = str_replace(array('&amp;sid=','sid='),'',$v); print_r($matches); ?&gt; </code></pre> <p>Here is a PHP solution, just use the pattern, it will work for JS too.</p> <p>For JS : </p> <pre><code>var code = '&lt;td width=120 valign="top"&gt; &lt;div style="height:135px; border:1px solid #BBBBBB; background:#BBBBBB; margin-left:2px; text-align:center; "&gt; &lt;a href="/now/episodes.php?name=path&amp;id=4000&amp;sid=12345&amp;page=0"&gt;&lt;img border="0" src="http://www.somesite.com/1234.jpg" width="150" height="83"&gt;&lt;/a&gt;&lt;br&gt; &lt;font face="Tahoma" size="2"&gt;&lt;b&gt;Star Album&lt;/b&gt;&lt;br/&gt; episode 4 &lt;/font&gt; &lt;/div&gt; &lt;/td&gt;'; matchingelements = code.match(/sid\=*(\d*)/ig); for(i=0;i&lt;code.length;i++){ document.write(matchingelements[i].replace('&amp;sid=','').replace('sid=','')); } </code></pre> <p>This outputs 12345</p>
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    1. POHow extract the value of the parameter "sid" from the href property of an anchor tag
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    1. COthanks for your code . is this correct pattern to use ?var pattern = /(?:&|(\?))sid=[^&]*(?(1)&|)?/i;
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    2. CO/sid\=*(\d*)/ig or /(?:&|(\?))sid=[^&]*(?(1)&|)?/ig Both seems to work when tested on your HTML source example.
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    3. COdo not forget /ig at the end where g mean to get all occurences in JS
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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