How can I ensure that my Textbox is validated using Javascript? Specifically, I want to make sure that the TextBox is not empty and that only two digits are allowed after the decimal point. Additionally, I would like to restrict any other characters except for periods (.) and numbers.
Take a look at the code snippet below:
<html>
<head>
<title> Regular Expression Tester </title>
<script type="text/javascript">
function Validate() {
var rgexp = new RegExp("^([0-9]*\.?[0-9]{1,2})$");
var input = document.getElementById("tbNumber").value;
if (input.match(rgexp))
alert("Valid");
else
alert("Not Valid");
}
</script>
</head>
<body>
<input type="text" id="tbNumber"/>
<input type="button" onclick="Validate()" value="Validate"/>
</body>
</html>
This should meet your requirements.
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