02-traffic-light.js

JavaScript
1/**
2 * 🚦 The Driving Simulator
3 *
4 * SafeDrive Driving School is building a simulator for new students.
5 * You need to write the logic that tells student drivers what to do
6 * when they encounter different traffic light signals.
7 *
8 * Signal → Action:
9 *   - "green"        → "GO"
10 *   - "yellow"       → "SLOW DOWN"
11 *   - "red"          → "STOP"
12 *   - "flashing red" → "STOP AND PROCEED WITH CAUTION"
13 *   - anything else  → "INVALID SIGNAL"
14 *
15 * Rules:
16 *   - The function should be case-insensitive
17 *     (e.g., "GREEN", "Green", "green" should all return "GO")
18 *
19 * Hint: Use a switch statement!
20 *
21 * @param {string} color - The traffic light signal
22 * @returns {string} The driving action to take
23 */
24export function getTrafficAction(color) {
25  let data = color.toLowerCase()
26  switch(data){
27    case "green":
28      return "GO"
29    case "yellow":
30      return "SLOW DOWN"  
31    case "red":
32      return "STOP"
33    case "flashing red":
34      return "STOP AND PROCEED WITH CAUTION"
35    default:
36      return "INVALID SIGNAL"        
37  }
38}
39