How to implement a lock in JavaScript

Question

How could something equivalent to lock in C# be implemented in JavaScript?

So, to explain what I\'m thinking a simple use case is:

User clicks

Answer 1

Locks are a concept required in a multi-threaded system. Even with worker threads, messages are sent by value between workers so that locking is unnecessary.

I suspect you need to just set a semaphore (flagging system) between your buttons.