JavaScript Foundations·Practice drills 18

Drill 28: Invalid input — Loops and iteration

Describe what happens when the input is invalid.

Beginner 5 min read Lesson 453 of 480 Challenge included
What you will be able to do
  • Describe what happens when the input is invalid.

Practice task

Describe what happens when the input is invalid.

loops.jsJavaScript
const scores = [12, 45, 33, 50, 41];

let total = 0;
for (const score of scores) {
  total = total + score;
}
console.log("Total:", total);

let countdown = 3;
while (countdown > 0) {
  console.log(countdown);
  countdown = countdown - 1;
}

const passed = scores.filter((score) => score >= 40);
console.log("Passed:", passed);
Your turn

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Describe what happens when the input is invalid.

TEXT · starter
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Lesson 453 of 480 · 0% of course