[Dilettante_Pro]

Исправленный вариант Александр3297

var phoneBook = {};
function re (command) {
// команда add
   if (command.split(' ')[0] =='ADD' ){
      var name = command.split(' ')[1];
      var numb = (command.split(' ')[2]).split(',');
      if(!phoneBook.hasOwnProperty(name)) {
		  phoneBook[name] = numb;
          return phoneBook[name];
      }
      else {
         phoneBook[name] = phoneBook[name].concat(numb);
         return Object.keys(phoneBook) + ': ' + phoneBook[name];
      }
   }

// команда  remove
   else if (command.split(' ')[0] =='REMOVE_PHONE' ){
      var numb = (command.split(' ')[1]);
      for (i=0; i<Object.keys(phoneBook).length; i++){
         var key = Object.keys(phoneBook)[i];
         for (j=0;j<phoneBook[key].length; j++){
            if(phoneBook[key][j] == numb) {     
                  phoneBook[key].splice(j, 1);
                  return true;
            } 
         }
          return false;
      }
   }

// команда show

   if (command.split(' ')[0] =='SHOW'){
      var book = [];
      for (i=0; i<(Object.keys(phoneBook)).length; i++){
         var key = Object.keys(phoneBook)[i];
         book[i] =  [key + ': ' + phoneBook[key] + '\n'];
      }
       return book;
   }
}
alert(re('ADD Ivan 223232'));
alert(re('ADD Ivan 555-10-01,555-10-03'));
alert(re('SHOW'));
alert (re('REMOVE_PHONE 555-10-01'));
alert (re('ADD Alex 544545')) ;
alert(re('SHOW'));