I have a text field named as "Code" and in the newform.aspx when the user enter some value I need to call some Javascript function. Below is the code snippet to call a Javascript function on text field value change event.
Code Snippet:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script><script type="text/javascript">
$(document).ready(function() {
$("input[title='Code']").change(function() {
alert($("input[title='Code']").val())
// Call Javascript function
});
});</script>