how to force the a Jquery function to fire only one time for the selector
<p>i have defined the following script to enable the "submit" button once the user start typing in any input field text field:-</p>

<pre><code>&lt;script type = "text/javascript"&gt;
    $("input[type= 'text']").change(function () {

        var $this = $("input[type='submit']");
        $this.prop('disabled', false);
    });
&lt;/script&gt;
</code></pre>

<p>but can i force the above script to fire only once ,, since it will be waste of processing to enable the submit button each time the user type in a text field,, where the submit button will be already enabled after the first <code>.change</code>.
BR</p>
