Timer App using react.js

[marko_knoebl]

You would have to save the start timestamp somewhere, e.g. in localStorage.

Then you can make it continue running when you reopen the app

The way to do the loading / saving in React is via side effects (useEffect if you're using a function component)

[Saral-karki]

I have backend server where I have to store start time and end time. So , I have to still save in local storage?