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Editorial Team
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Asked: 2026-06-11T18:25:13+00:00

I need to validate my Textbox by using Javascript. The TextBox shouldn’t be null

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I need to validate my Textbox by using Javascript. The TextBox shouldn’t be null and after decimal point, only two digits are allowed.
It will be better if you restrict any other character except .(dot) and numbers.

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1 Answer

  1. Editorial Team

    Please look at the below code

    <html>
<head>
<title> Regexpression 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>

    I think it will satisy yor need.

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