Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Chrome 99
Windows
Desktop
3 years ago
Test name Executions per second
Object Literal 7511163.0 Ops/sec
If Else 2507476.2 Ops/sec
Switch Case 7396470.0 Ops/sec
Object Literal 2 7500189.5 Ops/sec
Script Preparation code:
AخA
 
animal = "cheetah"
Tests:
  • Object Literal

    x
     
      const babyAnimals = {
        dog: "Puppy",
        cat: "Kitten",
        cheetah: "Cub",
      };
      let result1 = babyAnimals[animal] || "-";
  • If Else

     
      let result2 = "-";
      if (animal === "dog") result2 = "Puppy";
      else if (animal === "cat") result2 = "Kitten";
      else if (animal === "cheetah") result2 = "Cub";
  • Switch Case

     
      let result3 = "-";
      switch (animal) {
        case "dog":
          result3 = "Puppy";
          break;
        case "cat":
          result3 = "Kitten";
          break;
        case "cheetah":
          result3 = "Cub";
          break;
        default:
      }
  • Object Literal 2

     
      const babyAnimals = {
        dog: "Puppy",
        cat: "Kitten",
        cheetah: "Cub",
      };
      let result1 = babyAnimals[animal] ?? "-";