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javascript関数ドリル 初級編last関数の実相のアウトプット

Posted at

##last関数の課題内容
   ↓
https://js-drills.com/blog/last/

##last関数の取り組む前の状態
なんとなく行けそうだった

##last関数に取り組んだ後の状態
index番号を忘れていて-1をつけ忘れていた

##last関数の実装コード(答えを見る前)

function last(array) {
  return array[array.length - 1];
}

console.log( last([1, 2, 3]) );

##last関数の実装コード(答えを見た後)

function last(array) {
  return array[array.length - 1];
}

console.log( last([1, 2, 3]) );
// => 3
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