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$ curl repovive.com/roadmaps/javascript/objects/for-in-loop

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$ curl repovive.com/roadmaps/javascript/objects/for-in-loop

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for...in Loop - Objects | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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for...in Loop

Iterating properties

Loop over an object's keys:

let scores = { alice: 95, bob: 87, charlie: 92 }

for (let name in scores) {
  console.log(name, scores[name])
}
// alice 95
// bob 87
// charlie 92

Use for...in for objects. For arrays, prefer for...of or array methods. for...in on arrays iterates indices as strings and includes inherited properties.