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30-seconds-of-code/snippets/measure-time-taken-by-function.md
2017-12-07 12:00:34 +02:00

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### Measure time taken by function
Use `performance.now()` to get start and end time for the function, `console.log()` the time taken.
First argument is the function name, subsequent arguments are passed to the function.
```js
var timeTaken = (f,...args) => {
var t0 = performance.now(), r = f(...args);
console.log({performance.now() - t0);
return r;
}
```