Only allow gridview textbox to take decimal number between 0-5

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I wrote a java-script function like below: to Only allow gridview textbox to take decimal number between 0-5. But the problem is it takes more than only one single point in decimal numbers and it also does not take anything greater than 5 even after decimal points. so i m not been able to write 3.8/4.8/2.6 type of value in textbox

JavaScript

<script type="text/javascript">
    var specialKeys = new Array();
    specialKeys.push(8); //Backspace
    $(function () {
        $(".numeric").bind("keypress", function (e) {
            var keyCode = e.which ? e.which : e.keyCode
            var ret = ( keyCode== 46 || (keyCode >= 48 && keyCode <= 53 ) || specialKeys.indexOf(keyCode) != -1);
            if (ret) {
                $(this).next().remove();
            }

            else {
                if (!$(this).next().hasClass("error")) {
                    $(this).after("<span class = 'error'><br />* Input digits (1-5)</span>");
                }
            }
            return ret;
        });

            $(".numeric").bind("paste", function (e) {
                return false;
            });
            $(".numeric").bind("drop", function (e) {
                return false;
            });
        });

</script>

can anyone give me any suggestion to solve that problem?

Posted 25-Nov-15 11:10am

Hapisha

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Manas_Kumar · Accepted Answer · 2015-11-25T18:27:00

Try with below code:

JavaScript

$(".numeric").bind("keypress", function (e) {
	var keyCode = e.which ? e.which : e.keyCode
	var ret = ( keyCode== 46 ||  ($(".numeric").val().length == 2)  || ($(".numeric").val().length == 0 && keyCode >= 48 && keyCode <= 53 ) || specialKeys.indexOf(keyCode) != -1);
	if (ret) {
		$(this).next().remove();
	} 
	else {
	   alert('error');
	}
	return ret;
});

Note: It will allows value like 2.9/3.4 etc but not 3.99 if you need it the it logic needs to change.