Switch statement in Javascript - Mini Project: Build & Apply

Using a Switch Statement in JavaScript

📖 Scenario: You are creating a simple program that tells the day of the week based on a number input. This is like a small helper that converts numbers 1 to 7 into day names.

🎯 Goal: Build a JavaScript program that uses a switch statement to print the correct day name for a given number from 1 to 7.

📋 What You'll Learn

Create a variable called dayNumber with a number from 1 to 7

Create a variable called dayName to store the day name

Use a switch statement with dayNumber to assign the correct day name to dayName

Print the value of dayName

💡 Why This Matters

🌍 Real World

Switch statements are useful when you want to choose between many options based on one value, like menu selections or commands.

💼 Career

Understanding switch statements helps in writing clear and efficient code for decision-making in many programming jobs.

1

Create the dayNumber variable

Create a variable called dayNumber and set it to the number 3.

Javascript

// Create a variable called dayNumber and set it to 3
// Your code here

Need a hint?

Use let dayNumber = 3; to create the variable.

2

Create the dayName variable

Create a variable called dayName and set it to an empty string "".

Javascript

let dayNumber = 3;
// Create a variable called dayName and set it to an empty string
// Your code here

Need a hint?

Use let dayName = ""; to create the variable.

3

Use a switch statement to assign the day name

Write a switch statement using dayNumber to assign the correct day name to dayName. Use these cases:
1: "Monday"
2: "Tuesday"
3: "Wednesday"
4: "Thursday"
5: "Friday"
6: "Saturday"
7: "Sunday"
Include a default case that sets dayName to "Invalid day".

Javascript

let dayNumber = 3;
let dayName = "";
// Write a switch statement using dayNumber to set dayName
// Your code here

Need a hint?

Use switch (dayNumber) { case 1: dayName = "Monday"; break; ... default: dayName = "Invalid day"; }

4

Print the dayName

Write a console.log statement to print the value of dayName.

Javascript

let dayNumber = 3;
let dayName = "";
switch (dayNumber) {
  case 1:
    dayName = "Monday";
    break;
  case 2:
    dayName = "Tuesday";
    break;
  case 3:
    dayName = "Wednesday";
    break;
  case 4:
    dayName = "Thursday";
    break;
  case 5:
    dayName = "Friday";
    break;
  case 6:
    dayName = "Saturday";
    break;
  case 7:
    dayName = "Sunday";
    break;
  default:
    dayName = "Invalid day";
}
// Print the dayName below
// Your code here

Need a hint?

Use console.log(dayName); to print the day name.