Excution Time

Let’s explore methods for measuring JavaScript execution time.

The conventional approach involves using the getTime() method of the Date object to calculate time differences. The resulting value represents milliseconds.

const beginTime = new Date().getTime();

// Code to be timed

console.log(new Date().getTime() - beginTime);

Alternatively, for quick verification of processing speed during development, the console.time and console.timeEnd functions can be employed.

console.time marks the starting point, and console.timeEnd marks the ending point. The str argument passed to both functions must have the same value. The output represents the elapsed time in milliseconds.

const timerName = "myTimer"; // Use a descriptive timer name
console.time(timerName);

// Code to be timed

console.timeEnd(timerName);

References

• JavaScript Execution Time Measurement - Zeta Wiki
• NodeJS Program Execution Time Measurement : Naver Blog