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[JavaScript] console.time() で処理時間を計測する

Last updated at Posted at 2019-10-04

方法

// delay ミリ秒だけ待機するスリープ関数
let sleep = async delay => new Promise(resolve => setTimeout(resolve, delay));

console.time('タイマー');
await sleep(5000);
console.timeEnd('タイマー');
// タイマー: 5313.85595703125ms

参考

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