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POGeneric way to fill out a form in javascript
 

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    <p>I'm looking for a really generic way to "fill out" a form based on a parameter string using javascript.</p> <p>for example, if i have this form:</p> <pre><code>&lt;form id="someform"&gt; &lt;select name="option1"&gt; &lt;option value="1"&gt;1&lt;/option&gt; &lt;option value="2"&gt;2&lt;/option&gt; &lt;/select&gt; &lt;select name="option2"&gt; &lt;option value="1"&gt;1&lt;/option&gt; &lt;option value="2"&gt;2&lt;/option&gt; &lt;/select&gt; &lt;/form&gt; </code></pre> <p>I'd like to be able to take a param string like this: <code>option1=2&amp;option2=1</code></p> <p>And then have the correct things selected based on the options in the query string.</p> <p>I have a sort of ugly solution where I go through children of the form and check if they match the various keys, then set the values, but I really don't like it.</p> <p>I'd like a cleaner, <strong>generic</strong> way of doing it that would work for any form (assuming the param string had all the right keys).</p> <p>I'm using the prototype javascript library, so I'd welcome suggestions that take advantage of it.</p> <p>EDIT: this is what I've come up with so far (using prototype for <code>Form.getElements(form)</code>)</p> <pre><code>function setFormOptions(formId, params) { params = params.split('&amp;'); params.each(function(pair) { pair = pair.split('='); var key = pair[0]; var val = pair[1]; Form.getElements(form).each(function(element) { if(element.name == key) { element.value = val; } }); }); } </code></pre> <p>I feel that it could still be faster/cleaner however.</p>
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