Common JS Verification Email verify Chinese English and digital regular

//Judge email
 

function Isemail () {
  var RT = new Array ();
  rt[0] = "\w+ ([-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) * ";
  rt[1] = "should be the correct e-mail format!";
  
  return RT;
 }
 
 //can only enter Chinese
 function Onlyzh () {
  var RT = new Array ();
  rt[0] = "^[u0391-uffe5]+$";
  rt[1] = "should be entered in Chinese!";
  return RT;
 }
 
 //can only enter English
 function Onlyen () {
  var RT = new Array ();
  rt[0] = "^[a-za-z]+$";
  rt[1] = "can only input English!";
  return RT;
 }
 
 function enornum () {
  var RT = new Array ();
  rt[0] = "^[a-za-z0-9]+$";
  rt[1] = "Only English and number can be entered, and no spaces!";
  
  return RT;
 }
</script>