14 lines
408 B
Markdown
14 lines
408 B
Markdown
### 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.
|
|
|
|
```js
|
|
const timeTaken = callback => {
|
|
const t0 = performance.now(), r = callback();
|
|
console.log(performance.now() - t0);
|
|
return r;
|
|
};
|
|
// timeTaken(() => Math.pow(2, 10)) -> 1024 (0.010000000009313226 logged in console)
|
|
```
|