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POjquery.validate plugin - how to trim values before form validation
 

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  1. POjquery.validate plugin - how to trim values before form validation
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    <p>I'm using the excellent <a href="http://bassistance.de/jquery-plugins/jquery-plugin-validation/" rel="noreferrer">jquery.validation plugin</a> by Jörn Zaefferer and I was wondering whether there's a easy way to automatically trim form elements before they are validated?</p> <p>The following is a cut down but working example of a form which validates a email address:</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html&gt; &lt;head&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /&gt; &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"&gt;&lt;/script&gt; &lt;script src="http://ajax.microsoft.com/ajax/jquery.validate/1.5.5/jquery.validate.js" type="text/javascript"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; $().ready(function() { $("#commentForm").validate({ rules: { email: { required: true, email: true } } }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form class="cmxform" id="commentForm" method="get" action=""&gt; &lt;label for="cemail"&gt;E-Mail:&lt;/label&gt;&lt;input id="cemail" name="email" class="required email" /&gt; &lt;input class="submit" type="submit" value="Submit"/&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>The problem is that some users are getting confused because they accidently enter some whitespace in their email address, e.g. "test@test.com ". And the form won't submit and has a error message: "Please enter a valid email address.". Non-techy users don't know how to spot whitespace and may just quit the site rather than try to work out what they've done wrong.</p> <p>Anyway, I was hoping I could chain "<code>jQuery.trim(value)</code>" before the validation so the whitespace is removed and the validation error never occurs?</p> <p>I could use <a href="http://docs.jquery.com/Plugins/Validation/Validator/addMethod#namemethodmessage" rel="noreferrer">addMethod</a> to build my own email validation function. But I'm sure there's a more elegant solution?</p>
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    1. COGreat question. Jörn said he would fix this as part of the plugin itself. But that was about a year ago. I can confirm that white space at the end of a field does make it invalid for me. I'm using version 1.5.5. (Jorn's post: http://www.mail-archive.com/jquery-en@googlegroups.com/msg55651.html)
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    2. COReading this question and all the answers makes me feel as if HTML is just so damned broken.
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