JavaScript Patterns 2.6 switch Pattern

Principle

• Aligning each case with switch(an exception to the curly braces indentation rule).

• Indenting the code within each case.

• Ending each case with a clear break;.

• Avoiding fall-throughs (when you omit the break intentionally). If you're absolutely convinced that a fall-through is the best approach, make sure you document such cases, because they might look like errors to the readers of your code.

• Ending the switch with a default: to make sure there's always a sane result even if none of the cases matched.

var inspect_me = 0,
result = '';

switch (inspect_me) {
   case 0:
      result = "zero";
      break;
   case 1:
      result = "one";
      break;
   default:
      result = "unknown";
}