Question

I try to check non negative number in jquery.If other then number my function works but for zero and non negative number its doesn’t work.Here is my sample fiddle.
Sample Fiddle
Unable to find my mistake.Thanks.

Answer 1

How about DEMO (NOTE: Error messages are OP’s own)

$('#txtNumber').keyup(function() {
    var val = $(this).val(), error ="";
    $('#lblIntegerError').remove();
    if (isNaN(val)) error = "Value must be integer value."
    else if (parseInt(val,10) != val || val<= 0) error = "Value must be non negative number and greater than zero";
    else return true;
    $('#txtNumber').after('<label class="Error"  id="lblIntegerError"><br/>'+error+'</label>');
    return false;
});