const services = ['Design', 'Dezvoltare', 'SEO'];
function printService(service) {
console.log(service);
}
services.forEach(printService);The function receives and prints each service in turn.
LESSON 49 OF 50
Run a callback with forEach
Apply the same function to every array element.
STEP 1 · LEARN
How it works
forEach calls the callback once for each existing element in ascending index order. It does not build a result array.
console.log('Design');
console.log('Dezvoltare');
console.log('SEO');The output is manually imitated and no callback is used.
STEP 2 · APPLY
Your exercise
Declare printService(service), then pass the function to services.forEach.
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STEP 4 · CHECK
What needs to pass
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- ○printService receives service, uses it and prints inside the body.
- ○services.forEach receives the printService callback.
- ○The output contains the three services in order.
Explain the solution logic
forEach controls iteration, while the function describes the operation for one element.