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	<title>Dream House &#187; form validation</title>
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		<title>Regular Expression Patterns</title>
		<link>http://sajjadhossain.com/2008/02/27/regular-expressions-patterns/#utm_source=feed&#038;utm_medium=feed&#038;utm_campaign=feed</link>
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		<pubDate>Tue, 26 Feb 2008 18:18:13 +0000</pubDate>
		<dc:creator>Mohammad Sajjad Hossain</dc:creator>
				<category><![CDATA[Regular Expression]]></category>
		<category><![CDATA[date validation]]></category>
		<category><![CDATA[decimal validation]]></category>
		<category><![CDATA[email validation]]></category>
		<category><![CDATA[form validation]]></category>
		<category><![CDATA[integer validation]]></category>
		<category><![CDATA[pattern]]></category>
		<category><![CDATA[regexp]]></category>
		<category><![CDATA[US telephone number validation]]></category>
		<category><![CDATA[zip code validation]]></category>

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		<description><![CDATA[From various sources I have collected the following regular expression patterns. They helped me a lot in front-end and back-end validation. Alpha: Pattern: ^[a-zA-Z_ ]+$ Description: Allows only &#8216;A-Z&#8217;, &#8216;a-z&#8217;, space ( &#8216; &#8216; ) and underscore ( &#8216;_&#8217;). Alphanumeric: Pattern: ^[a-zA-Z0-9_ ]+$ Description: Allows only &#8216;A-Z&#8217;, &#8216;a-z&#8217;, &#8217;0-9&#8242;, space ( &#8216; &#8216; ) and [...]
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			<content:encoded><![CDATA[<p>From various sources I have collected the following regular expression patterns. They helped me a lot in front-end and back-end validation.</p>
<h3>Alpha:</h3>
<p><strong>Pattern:</strong> ^[a-zA-Z_ ]+$<br />
<strong>Description:</strong> Allows only &#8216;A-Z&#8217;, &#8216;a-z&#8217;, space ( &#8216; &#8216; ) and underscore ( &#8216;_&#8217;).</p>
<h3>Alphanumeric:</h3>
<p><strong>Pattern:</strong> ^[a-zA-Z0-9_ ]+$<br />
<strong>Description:</strong> Allows only &#8216;A-Z&#8217;, &#8216;a-z&#8217;, &#8217;0-9&#8242;, space ( &#8216; &#8216; ) and underscore ( &#8216;_&#8217;).</p>
<h3>Email:</h3>
<p><strong>Pattern:</strong> /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i</p>
<h3>Numeric:</h3>
<p><strong>Pattern:</strong> ^\d+$</p>
<h3>Decimal:</h3>
<p><strong>Pattern:</strong> ^\d+(?:\.\d{0,2})?$</p>
<h3>Date &#8211; 1:</h3>
<p><strong>Pattern:</strong> ^(0[1-9]|[1,2][0-9]|3[0-1])-(0[1-9]|1[0,1,2])-\d{4}$<br />
<strong>Description:</strong> Date format DD-MM-YYYY</p>
<h3>Date &#8211; 2:</h3>
<p><strong>Pattern:</strong> ^(0[1-9]|1[0,1,2])-(0[1-9]|[1,2][0-9]|3[0-1])-\d{4}$<br />
<strong>Description:</strong> Date format MM-DD-YYYY</p>
<h3>US Zip Code:</h3>
<p><strong>Pattern:</strong> ^\d{5}$</p>
<h3>US Telephone Number:</h3>
<p><strong>Pattern:</strong> ^1?[\-]?\(?\d{3}\)?[\-]?\d{3}[\-]?\d{4}$</p>
<h3>Color Code:</h3>
<p><strong>Pattern:</strong> ^#{1}?([a-f]|[A-F]|[0-9]){3}(([a-f]|[A-F]|[0-9]){3})?$</p>
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