Allowing only numbers and one decimal

Question

Guys and gals i have this piece of JavaScript code that only allows for numbers and one decimal period. The problem i\'m having is that when i tab over to my textbox contro

Answer 1

Try this,

$('input').on('keydown', function (event) {
    return isNumber(event, this);
});
function isNumber(evt, element) {
    var charCode = (evt.which) ? evt.which : evt.keyCode;
    if ((charCode != 190 || $(element).val().indexOf('.') != -1)  // “.” CHECK DOT, AND ONLY ONE.
            && (charCode != 110 || $(element).val().indexOf('.') != -1)  // “.” CHECK DOT, AND ONLY ONE.
            && ((charCode < 48 && charCode != 8)
                    || (charCode > 57 && charCode < 96)
                    || charCode > 105))
        return false;
    return true;
}