บทที่ 5: บทที่ 5: เงื่อนไข (Conditions)

let score = 80;

if (score >= 50) {
  console.log("ผ่าน");
} else {
  console.log("ไม่ผ่าน");
}

let grade = 85;

if (grade >= 90) {
  console.log("A");
} else if (grade >= 80) {
  console.log("B");
} else {
  console.log("C");
}

let color = "red";

switch (color) {
  case "red":
    console.log("Stop");
    break;
  case "green":
    console.log("Go");
    break;
  default:
    console.log("Wait");
}