The CHANGE property is used by any text-related and select-box form elements to indicate a change in the element settings.
<html>
<head>
<title>Example of Event.CHANGE</title>
</head>
<body>
<script language="JavaScript">
<!--
function handleChange(evnt){
alert("The text in TextBox1 has been changed");
return true;
}
document.onchange = handleChange;
-->
</script>
This triggers an alert box to open
up informing you that the text in box 1 has been changed.
<br><br>
<form name="form1">
TextBox1:
<input type="text" size="20" name="text1" onChange=''>
<br><br>
TextBox2:
<input type="text" size="20" name="text2">
</form>
</body>
</html>