Answer: know your Javascript loops

answer re: For-each over an array in JavaScript

Feb 17 '12

7548

TL;DR

• Your best bets are usually

  • a for-of loop (ES2015+ only; spec | MDN) - simple and async-friendly
  • forEach (ES5+ only; spec | MDN) (or its relatives some and such) - not async-friendly (but see details)
  • a simple old-fashioned for loop - async-friendly
  • (rarely) for-in…

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