Best way to restrict a text field to numbers only?

Question

I\'m using the following Javascript to restrict a text field on my website to only accept numerical input, and no other letters or characters. The problem is, it REALLY reje

Answer 1

My functions:

$('.input_integer_only').on('input', function(e) {
    $(this).val($(this).val().replace(/[^0-9]/g, ''));
});


$('.input_float_only').on('input', function(e) {
    var $var = $(this).val().replace(/[^0-9\.]/g, '');
    var $aVar = $var.split('.');

    if($aVar.length > 2) {
        $var = $aVar[0] + '.' + $aVar[1];
    }

    $(this).val($var);
});