I got the Json `"false"` from server. I respond as `bool` but it's Json so it's in browser type is `String` instead of `bool`.

So if I run `(!data)` whenever I want to check `"false" == false` then they not worked.

So how can I parse `bool` from `String` in JavaScript then?

`"true" == true` and `"false" == false`. Then the code `(!data)` can check what it is [`true` and `false`]