console.time


- time consume
```typeconsole.time("answer time");alert("Click to continue");console.time("answer time");alert("Do a bunch of other stuff...");console.timeEnd("answer time");```

### Use performance.now() diff
```typeperformance.now()```


> [[스압/데이터주의] 웹 최적화 방식 모음 - 0. 전반적 원칙과 원리](https://black7375.tistory.com/72)

> [How to measure time taken by a function to execute](https://stackoverflow.com/questions/313893/how-to-measure-time-taken-by-a-function-to-execute)

> [Console.timeLog()](https://developer.mozilla.org/en-US/docs/Web/API/Console/timeLog)




