How to get/check javascript execution time
最近開始睇下D algorithm 既 tutorial
想了解下學左 / 用左會 efficient 幾多呢
這個當然要用時間來 value
最簡單既方法就係計 execution time
在javascript 上如何計execution time 呢?
** 解決方法 **
我們可以使用
console.time();
console.timeEnd();
來記錄 javascript 的 execution time e.g.
// created a delay function to simulate a slow process
const delay = ms => new Promise(res => setTimeout(res, ms));
// create a time to log full execution time
console.time('full');
// create a time to log the 3s process
console.time('log 3s');
await delay(3000);
console.log('3s');
console.timeEnd('log 3s');
console.time('log 5s');
await delay(5000);
console.log('5s');
console.timeEnd('log 5s');
console.time('log 10s');
await delay(10000);
console.log('10s');
console.timeEnd('log 10s');
// print the full execution time
console.timeEnd('full');
gist https://gist.github.com/sharechiwai/00256c8fd2c01c6849fb25f70782def5
Hope you find it useful
