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POSyntax error with parseJSON during unobtrusive validation
 

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  1. POSyntax error with parseJSON during unobtrusive validation
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    <p>My MVC app is generating the following HTML which causes a Javascript syntax error upon submission (I'm not typing anything into the two text boxes). Here's the generated HTML and the submit handler:</p> <pre><code>&lt;form action="/UrIntake/Save" id="UrIntakeForm" method="post"&gt; &lt;input data-val="true" data-val-length="The field LastName must be a string with a maximum length of 50." data-val-length-max="50" data-val-required="The LastName field is required." id="FormSubmitter_LastName" name="FormSubmitter.LastName" type="text" value="" /&gt; &lt;input data-val="true" data-val-length="The field FirstName must be a string with a maximum length of 50." data-val-length-max="50" data-val-required="The FirstName field is required." id="FormSubmitter_FirstName" name="FormSubmitter.FirstName" type="text" value="" /&gt; &lt;div id="SubmissionButtons" class="right"&gt; &lt;input type="button" onclick="SubmitForm()" value="Submit" /&gt; &lt;input type="button" onclick="CancelForm()" value="Cancel" /&gt; &lt;/div&gt; &lt;/form&gt; function SubmitForm() { $("#UrIntakeForm").valid(); . . . </code></pre> <p>This is the jQuery code where the syntax error is occurring (v1.9.0). "data" is undefined and the "return" line is where the error occurs:</p> <pre><code>parseJSON: function( data ) { // Attempt to parse using the native JSON parser first if ( window.JSON &amp;&amp; window.JSON.parse ) { return window.JSON.parse( data ); } </code></pre> <p>Presumably, I don't have to enter anything into the text boxes (and should then get the "field is required" message). Is this what's causing the error? That doesn't make sense, but I don't see what else it could be.</p>
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    1. COI don't think the error is discernible from what you're showing here. Try putting a breakpoint in the jQuery code where the error occurs and look back through the stack trace to see where it's being called from. That will give you clues as to why null is being passed to this function.
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      1. USJerry
    2. COWill do. When I discover something helpful, I'll come back. Thanks.
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    3. COPlease vote here so that Microsoft corrects it ASAP: http://connect.microsoft.com/VisualStudio/feedback/details/776965/please-support-jquery-v1-9-0-properly-in-jquery-validate-unobtrusive
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      1. USLeniel Maccaferri
 

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