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validation does not work when textbox value is programmatically set #52

channeladam opened this Issue Mar 7, 2011 · 3 comments


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3 participants

Given a form with two textboxes (as a simple example of the issue)
When the first textbox has a class of 'required'
And the second textbox's value has been set programmatically
Then validation on the first textbox should happen

Below is a sample HTML to illustrate the issue. Follow the instructions at the bottom to manually reproduce the issue.

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>

<script type="text/javascript">
    $(document).ready(function () {


        $('#text2').val('2');  // this causes validation of #text1 not to happen



<form id="myForm" action="">

    <label for="text1">Text 1 *</label>
    <input id="text1" name="text1" class="required" type="text" />

    <label for="text2">Text 2</label>
    <input id="text2" name="text2" type="text" />


    Because the JavaScript programmatically sets the value of Text 2, jquery.validate doesn't properly validate the required field Text 1.
    (1) Focus should automatically be on Text 2<br/>
    (2) Press Shift-Tab to put focus on Text 1 (or use the mouse)<br/>
    (3) Type 'a' and then press Tab to put focus on Text 2<br/>
    (4) Press Shift-Tab to put focus back on Text 1 (or use the mouse)<br/>
    (5) Press Backspace to clear out the value in Text 1<br/>
    (6) At this point, the validation message should occur, but it doesn't!<br/>
    Comment out the JavaScript line "$('#text2').val('2');" and try the test again... validation will work.

Is this a duplicate of / related to Issue #14?


mlynch commented Apr 24, 2012

Possibly fixed by #396


mlynch commented Apr 25, 2012

Duplicate of #244

@mlynch mlynch closed this Apr 25, 2012

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