什么与JavaScript中无条件的Go开关最接近？

In Go, I can use a switch without a condition, and instead provide the conditions in the case branches, such as:

package main

import (
    "fmt"
    "time"
)

func main() {
    t := time.Now()
    switch {
    case t.Hour() < 12:
        fmt.Println("Good morning!")
    case t.Hour() < 17:
        fmt.Println("Good afternoon.")
    default:
        fmt.Println("Good evening.")
    }
}

(Taken from https://tour.golang.org/flowcontrol/11)

What I like about this approach is that it is much cleaner than if-else if-else if-…. Unfortunately, this construct is not possible in JavaScript.

How could I create something that looks like this as closely as possible, using some (weird) language constructs?

You can use virtually the same construct as in Go:

var now = new Date();

switch (true) {
  case now.getHours() < 12:
    console.log('Good morning');
    break;
  case now.getHours() < 17:
    console.log('Good afternoon');
    break;
  default:
    console.log('Good evening');
}

</div>

You could use conditions at the case clause.

var a = 2;
switch (true) {  // strict comparison!
    case a < 3:
        console.log(a + ' is smaller than 3');
        break;
}

</div>

abusing the language,

var now = new Date();
now.getHours() < 12 && console.log('Good morning') ||
now.getHours() < 17 && console.log('Good afternoon') ||
now.getHours() >= 17 && console.log('Good evening')