David Y.
—What is the best way to loop over an array in JavaScript?
Looping over arrays in JavaScript was historically done using either a standard for
loop or the Array.prototype.forEach()
loop. The former approach loops over indexes rather than items, and the latter approach can sometimes behave unexpectedly. Modern JavaScript provides the for...of
statement as a simple way to loop over array items.
const numbers = [1, 2, 3]; for (const number of numbers) { console.log(number); } // output: // 1 // 2 // 3
Tasty treats for web developers brought to you by Sentry. Get tips and tricks from Wes Bos and Scott Tolinski.
SEE EPISODESConsidered “not bad” by 4 million developers and more than 100,000 organizations worldwide, Sentry provides code-level observability to many of the world’s best-known companies like Disney, Peloton, Cloudflare, Eventbrite, Slack, Supercell, and Rockstar Games. Each month we process billions of exceptions from the most popular products on the internet.