diff --git a/snippets/measure-time-taken-by-function.md b/snippets/measure-time-taken-by-function.md index 44e099d7e..ca476ac71 100644 --- a/snippets/measure-time-taken-by-function.md +++ b/snippets/measure-time-taken-by-function.md @@ -1,13 +1,14 @@ ### Measure time taken by function -Use `performance.now()` to get start and end time for the function, `console.log()` the time taken. -Pass a callback function as the argument. +Use `console.time()` and `console.timeEnd()` to measure the difference between the start and end times to determine how long the callback took to execute. ```js const timeTaken = callback => { - const t0 = performance.now(), r = callback(); - console.log(performance.now() - t0); + console.time('timeTaken'); + const r = callback(); + console.timeEnd('timeTaken'); return r; }; -// timeTaken(() => Math.pow(2, 10)) -> 1024 (0.010000000009313226 logged in console) +// timeTaken(() => Math.pow(2, 10)) -> 1024 +// (logged): timeTaken: 0.02099609375ms ```