switch

Node.js

  1. const value = 'b'
  3. switch(value) {
  4.   case 'a':
  5.     console.log('A')
  6.     break
  7.   case 'b':
  8.     console.log('B')
  9.     break
  10.   case 'c':
  11.     console.log('C')
  12.     break
  13.   default:
  14.     console.log('first default')
  15. }
  17. switch(value) {
  18.   case 'a':
  19.     console.log('A - falling through')
  20.   case 'b':
  21.     console.log('B - falling through')
  22.   case 'c':
  23.     console.log('C - falling through')
  24.   default:
  25.     console.log('second default')
  26. }

Output

  1. B
  2. B - falling through
  3. C - falling through
  4. second default

Go

  1. package main
  3. import "fmt"
  5. func main() {
  6.     value := "b"
  8.     switch value {
  9.     case "a":
  10.         fmt.Println("A")
  11.     case "b":
  12.         fmt.Println("B")
  13.     case "c":
  14.         fmt.Println("C")
  15.     default:
  16.         fmt.Println("first default")
  17.     }
  19.     switch value {
  20.     case "a":
  21.         fmt.Println("A - falling through")
  22.         fallthrough
  23.     case "b":
  24.         fmt.Println("B - falling through")
  25.         fallthrough
  26.     case "c":
  27.         fmt.Println("C - falling through")
  28.         fallthrough
  29.     default:
  30.         fmt.Println("second default")
  31.     }
  32. }

Output

  1. B
  2. B - falling through
  3. C - falling through
  4. second default