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POJQuery add validation method to validate regarding another element in the form
 

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    <p>I'm trying to create a custom validation method in JQuery and I can't manage to make it work properly.</p> <p>Here is what I want to do : </p> <pre><code>&lt;div class="row"&gt; &lt;label for="fld-stories"&gt;Stories&lt;/label&gt; &lt;select id="fld-stories" class="valid" name="stories" title=""&gt; &lt;option value=""&gt;--&lt;/option&gt; &lt;option value="1" label="1"&gt;1&lt;/option&gt; &lt;option value="2" label="2"&gt;2&lt;/option&gt; &lt;option value="3" label="3"&gt;3&lt;/option&gt; &lt;option value="4" label="4"&gt;4&lt;/option&gt; &lt;option value="5" label="5"&gt;5&lt;/option&gt; &lt;/select&gt; &lt;/div&gt; &lt;div id="row_master_bedroom_location" class="row"&gt; &lt;label for="fld-master_bedroom_location"&gt;Master Bedroom Location&lt;/label&gt; &lt;select id="fld-master_bedroom_location" name="master_bedroom_location" title=""&gt; &lt;option value="up"&gt;Upstairs&lt;/option&gt; &lt;option value="down"&gt;Downstairs&lt;/option&gt; &lt;/select&gt; &lt;/div&gt; </code></pre> <p>If the user selects the master bedroom location to be upstairs (see second select), the number of stories for the house should be superior or equal to 2 (which is logical since the master bedroom can't be upstairs if there is only one story).</p> <p>To do so I try to add a custom method to my JQuery validator :</p> <pre><code>$.validator.addMethod('masterBedroomLocation', function(value, element, params) { if (value == 'up' &amp;&amp; $("#fld-stories").val() &lt; 2){ return false; } }, 'You cannot select &amp;quot;Upstairs&amp;quot; for a one&amp;ndash;story home'); </code></pre> <p>I'm not sure how to get the value of another element in the form, I tried the JQuery old fashion way but it doesn't seem to work.</p> <p>For additional information, I add the custom method in a global javascript files, in a function that binds the JQuery validation to every forms that have a special class name.</p>
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    1. USMaxime Lepers
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    1. COInstead of a custom validation method, why not simply modify the appropriate select list options? It will make far more sense that the user not be presented with inapplicable options after making a selection.
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      1. USSparky
 

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