Description

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Beginner · 8 min

Repeat with loops

Use for...of to process each item and accumulate a total.

Visit each value

for...of runs a block once for each value in an array. The loop variable holds the current value.

const names = ["Ada", "Mina"];
for (const name of names) {
  console.log("Hello, " + name);
}

Output

Hello, Ada
Hello, Mina

Build a running total

Declare a running total with let before the loop. += adds a value to the current total. Display the result after the loop finishes.

const prices = [4, 6, 3];
let total = 0;
for (const price of prices) {
  total += price;
}
console.log(total);

Output

13

Put it into practice

  1. Predict the output of each example before running it.
  2. Complete the coding task, then try the practice questions.

Try it yourself

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Total the prices

Add every value in prices to total using the loop, then display total.

Practice