switch Statements
Imagine you are standing in front of a vending machine filled with snacks. Each snack has a number below it. You simply press the number of the snack you want, and the machine gives it to you. This is a lot like how a switch statement works in JavaScript. You have a single value (like the number you press), and the code chooses the right action based on that value. Instead of checking every possibility with a long chain of if...else if statements, you can use a switch to make your code clearer and easier to read.
12345678910111213141516171819// Choose a snack based on the selected number let snackNumber = 2; let snack; switch (snackNumber) { case 1: snack = "Chips"; break; case 2: snack = "Chocolate Bar"; break; case 3: snack = "Granola Bar"; break; default: snack = "Unknown snack"; } console.log("You chose: " + snack);
1. When is a switch statement more useful than multiple if...else if statements?
2. Complete the switch statement so that it sets 'snack' to 'Granola Bar' when 'snackNumber' is 3.
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Can you explain how the `switch` statement works in this example?
What happens if I change the value of `snackNumber`?
Are there any advantages of using `switch` over `if...else` statements?
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Imagine you are standing in front of a vending machine filled with snacks. Each snack has a number below it. You simply press the number of the snack you want, and the machine gives it to you. This is a lot like how a switch statement works in JavaScript. You have a single value (like the number you press), and the code chooses the right action based on that value. Instead of checking every possibility with a long chain of if...else if statements, you can use a switch to make your code clearer and easier to read.
12345678910111213141516171819// Choose a snack based on the selected number let snackNumber = 2; let snack; switch (snackNumber) { case 1: snack = "Chips"; break; case 2: snack = "Chocolate Bar"; break; case 3: snack = "Granola Bar"; break; default: snack = "Unknown snack"; } console.log("You chose: " + snack);
1. When is a switch statement more useful than multiple if...else if statements?
2. Complete the switch statement so that it sets 'snack' to 'Granola Bar' when 'snackNumber' is 3.
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