Special character validation

Question

I have some javascript written to validate that a string is alphanumeric but i was just wondering how i could add some code to include hyphens(-) and slash\'s(/) as acceptab

Answer 1

Simply add them to the character group. Of course, because both - and / are special characters in this context (/ ends a RegExp, - expresses a range), you'll need to escape them with a preceding \:

function validateAddress(){
    var TCode = document.getElementById('address').value;

    if( /[^a-zA-Z0-9\-\/]/.test( TCode ) ) {
        alert('Input is not alphanumeric');
        return false;
    }

    return true;     
}