Nested switch statement in javascript

Question

Is it possible to use nested switch statement in javascript.

My code is some what look like

switch(id1) { case 1:      switch(id2){      case 1:{         switch(id3){         case 1:{}         case 2:{}         }     }      case 2:{         switch(id4){         case 1:{}         case 2:{}         }      } } case 2: } 

If yes then it is a good practice to do or we can use any alternate approach.

Answer 1

Your approach is absolutely fine.

You can make the switch nesting less complex by using switch (true):

switch (true) { case ((id1 === 1) && (id2 === 1) && (id3 === 1)) : case ((id1 === 1) && (id2 === 1) && (id3 === 2)) : case ((id1 === 1) && (id2 === 2) && (id3 === 1)) : case ((id1 === 1) && (id2 === 2) && (id3 === 2)) : case ((id1 === 2) && (id2 === 1) && (id3 === 1)) : case ((id1 === 2) && (id2 === 1) && (id3 === 2)) : case ((id1 === 2) && (id2 === 2) && (id3 === 1)) : case ((id1 === 2) && (id2 === 2) && (id3 === 2)) : } 

Answer 2

Yes, you can use inner switch like this way,

Please check this demo : https://jsfiddle.net/1qsfropn/3/

var text; var date = new Date() switch (date.getDay()) {  case 1:  case 2:  case 3:  default:     text = "Looking forward to the Weekend";     break;  case 4:  case 5:     text = "Soon it is Weekend";     break;  case 0:  case 6:       switch(date.getFullYear()){       case 2015:         text = "It is Weekend of last Year.";       break;       case 2016:         text = "It is Weekend of this Year.";       break;       case 2017:         text = "It is Weekend of next Year.";       break;       default:       text = date.getDay();       break;     } break; } document.getElementById("demo").innerHTML = text;`