switch

switch

Node.js

const value = 'b'

switch(value) {
  case 'a':
    console.log('A')
    break
  case 'b':
    console.log('B')
    break
  case 'c':
    console.log('C')
    break
  default:
    console.log('first default')
}

switch(value) {
  case 'a':
    console.log('A - falling through')
  case 'b':
    console.log('B - falling through')
  case 'c':
    console.log('C - falling through')
  default:
    console.log('second default')
}

Output

B
B - falling through
C - falling through
second default

Go

package main

import "fmt"

func main() {
    value := "b"

    switch value {
    case "a":
        fmt.Println("A")
    case "b":
        fmt.Println("B")
    case "c":
        fmt.Println("C")
    default:
        fmt.Println("first default")
    }

    switch value {
    case "a":
        fmt.Println("A - falling through")
        fallthrough
    case "b":
        fmt.Println("B - falling through")
        fallthrough
    case "c":
        fmt.Println("C - falling through")
        fallthrough
    default:
        fmt.Println("second default")
    }
}

Output

B
B - falling through
C - falling through
second default