Question

I am currently building an application and I want a javascript or jquery condition that only allows numbers to be entered into the text box and/or the following percent but i am not sure how to obtain this… I found this but how do i allow the following percent

Answer 1

$(document).ready(function() {
    $("#my_input").keypress(function(event) {
        // Allow only backspace, delete, and percent sign
        if ( event.keyCode == 46 || event.keyCode == 8 || event.keyCode == 37) {
            // let it happen, don't do anything
        }
        else {
            // Ensure that it is a number and stop the keypress
            if (event.keyCode < 48 || event.keyCode > 57) {
                event.preventDefault(); 
            }   
        }
    });
});

Demo: http://jsfiddle.net/AlienWebguy/ufqse/