Javascript 코드 실행 시간 확인하기

function someMethodIThinkMightBeSlow() {
    const startTime = performance.now();

    // Do the normal stuff for this function

    const duration = performance.now() - startTime;
    console.log(`someMethodIThinkMightBeSlow took ${duration}ms`);
}

 

참고 url

stackoverflow.com/questions/41218507/violation-long-running-javascript-task-took-xx-ms