Javascript phone mask for text field with regex

Question

I\'m using this function to phone mask and works almost perfectly.

function mask(o, f) 
{ 
    v_obj = o; 
    v_fun = f; 
    setTimeout(\"execmask()\", 1) 
};
         


        

Answer 1

I love this function and I use it all the time. I've added 2 other masks if anyone needs them. I understand that they don't directly answer the question, but they are super useful.

//Social Security Number for USA
 function mssn(v) {
    var r = v.replace(/\D/g,"");
    r = r.replace(/^0/,"");
    if (r.length > 9) {
        r = r.replace(/^(\d\d\d)(\d{2})(\d{0,4}).*/,"$1-$2-$3");
        return r;
    }
    else if (r.length > 4) {
        r = r.replace(/^(\d\d\d)(\d{2})(\d{0,4}).*/,"$1-$2-$3");
    }
    else if (r.length > 2) {
        r = r.replace(/^(\d\d\d)(\d{0,3})/,"$1-$2");
    }
    else {
        r = r.replace(/^(\d*)/, "$1");
    }
    return r;
}

//USA date
function mdate(v) {
   var r = v.replace(/\D/g,"");
   if (r.length > 4) {
    r = r.replace(/^(\d\d)(\d{2})(\d{0,4}).*/,"$1/$2/$3");
   }
   else if (r.length > 2) {
    r = r.replace(/^(\d\d)(\d{0,2})/,"$1/$2");
   }
   else if (r.length > 0){
         if (r > 12) {
           r = "";
         }
   }
   return r;
}