jQuery Validation plugin in ASP.NET Web Forms

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You can checkout the rules add function, but basically here’s what you can do:

jQuery(function() {
    // You can specify some validation options here but not rules and messages
    jQuery('form').validate(); 
    // Add a custom class to your name mangled input and add rules like this
    jQuery('.username').rules('add', { 
        required: true, 
        messages: { 
            required: 'Some custom message for the username required field' 
        } 
    });
});

<input name="ctl00$ContentPlaceHolder1$tbUsername" type="text" id="ctl00_ContentPlaceHolder1_tbUsername" class="username" />

This way no need to worry about the crappy identifiers generated by the webforms engine.

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