عدم اجرا کد مثال RegExp در html ( کد به نظر درست میاد)

سلام

دوستان این رو بررسی کنید لطفا:

//in the name of GOD
  // this 4 vars below are will use for RegExps in switch statement at several lines later \/\/\/
var gmail = new RegExp(gmail.com$);
var yahoo = new RegExp(yahoo.com$);
var outlook = new RegExp(outlook.com$);
var hotmail = new RegExp(hotmail.com$);
    //and this one below for asking email\/\/\/
var AskingTheEmail = prompt("email?");
switch (AskingTheEmail){
  case test.gmail :
    alert("a gmail");
    break;
  case test.yahoo :
    alert ("a yahoo");
    break;
  case test.outlook :
    alert ("an outlook");
    break;
  case test.hotmail :
    alert ("a hotmail");
    break;
}