swap variables in JavaScript

What this snippet does

Array destructuring on the left side of an assignment is the cleanest way to swap two variables in place.

Expected output

1 2
2 1
world hello

Why practise typing this

Typing destructuring code builds muscle memory for the symbols and indentation JavaScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

More JavaScript practice

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• iterable destructureDestructuring · intermediate
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