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POHow to prevent buttons from submitting forms
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  1. POHow to prevent buttons from submitting forms
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    copied!<p>In the following page, with Firefox the remove button submits the form, but the add button doesn't. How do I prevent the remove button from submitting the form?</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script type="text/javascript" src="jquery-1.3.2.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; function addItem() { var v = $('form :hidden:last').attr('name'); var n = /(.*)input/.exec(v); var newPrefix; if ( n[1].length == 0 ) { newPrefix = '1'; } else { newPrefix = parseInt(n[1])+1; } var oldElem = $('form tr:last'); var newElem = oldElem.clone(true); var lastHidden = $('form :hidden:last'); lastHidden.val(newPrefix); var pat = '=\"'+n[1]+'input'; newElem.html(newElem.html().replace(new RegExp(pat, 'g'), '=\"'+newPrefix+'input')); newElem.appendTo('table'); $('form :hidden:last').val(''); } function removeItem() { var rows = $('form tr'); if ( rows.length &gt; 2 ) { rows[rows.length-1].html(''); $('form :hidden:last').val(''); } else { alert('Cannot remove any more rows'); } } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form autocomplete="off" method="post" action=""&gt; &lt;p&gt;Title:&lt;input type="text" /&gt;&lt;/p&gt; &lt;button onclick="addItem(); return false;"&gt;Add Item&lt;/button&gt; &lt;button onclick="removeItem(); return false;"&gt;Remove Last Item&lt;/button&gt; &lt;table&gt; &lt;th&gt;Name&lt;/th&gt; &lt;tr&gt; &lt;td&gt;&lt;input type="text" id="input1" name="input1" /&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="hidden" id="input2" name="input2" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;input id="submit" type="submit" name="submit" value="Submit"&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
 

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