> For the complete documentation index, see [llms.txt](https://appsecurity.gitbook.io/devops/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://appsecurity.gitbook.io/devops/ppc/ppc-langs/frontend/js-ts/javascript/cases/zamer-vremeni-otrabotki-zaprosa.md).

# Замер времени отработки запроса

```javascript
var t0 = performance.now()

doSomething()   // <---- measured code goes between t0 and t1

var t1 = performance.now()
console.log("Call to doSomething took " + (t1 - t0) + " milliseconds.")
```

или в лог (строки в time и timeEnd должны быть одинаковы):

```javascript
console.time('doSomething')

doSomething()   // <---- The function you're measuring time for 

console.timeEnd('doSomething')
```