switch

var val = 2;
var str = 'ru';

function funMake() {
 switch(val) {
  case 1: 
   document.write('Привет Мир!' + '
');
  break;
  case 2: 
   document.write('Hello World!' + '
');
  break;
  default: 
   document.write('To be or not to be?' + '
');
  break;
 }

 switch(str) {
  case 'en': 
   document.write('Hello World!' + '
');
  break;
  case 'ru': 
   document.write('Привет Мир!' + '
');
  break;
  default: 
   document.write('To be or not to be?' + '
');
  break;
 }

 function fun(arg) {
  switch(arg) {
   case 1: 
    return arg * arg;
   case 2:
    return arg * arg;
   case 3:
    return arg * arg;
  default: 
   document.write('To be or not to be?' + '
');
  break;
  }
 }

 document.write(fun(2));
}