Textbox format number with two decimal places

 There can be many ways to display a number formatted in a textbox. Here I have used jQuery to achieve the expected result.

<script>

$(function () {

    $('#txtAmount').on('input', function(e) {

        if (/^(\d+(\.\d{0,2})?)?$/.test($(this).val())) {

            $(this).data('oldValue', $(this).val());

        } else {

            $(this).val($(this).data('oldValue') || '');

        }

    }).trigger('input');  

});

</script>

HTML

<input type="text"  id="txtAmount" placeholder="Enter Amount" />

Cheers

Samitha