JavaScript: Integer Validation

by MythOfEchelon

HTML

<!DOCTYPE html> <!-- This is just my HTML5-valid template. Make sure you set this up correctly for your personal needs -->

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title></title>
        
        <style>
            * {
                margin: 0;
                padding: 0;
            }
        
            html {
                font: 16px "Segoe UI", "Segoe WPC", Helvetica, Arial, "Arial Unicode MS", Sans-Serif;
            }
            
            div {
                float: left;
            }
        </style>
    </head>
    
    <body>
        <div id="page_Wrapper">
            <input onKeyUp="validate(this)" />
        </div>
        
        <!-- Include the script after all DOM elements have been created, to avoid any potential DOM-related errors -->
        <script>
            function validate(element){
                var regex = /[^0-9]/gi;
                if (element.value.search(regex) > -1) {
                    element.value = element.value.replace(regex, "");
                }
            }
        </script>
    </body>
</html>