Question

I would like to know what the browser does about events that happen while scripts are currently running. Does the browser just ignore these events or does it store them and execute them after any scripts stop running? Is this dependent on the event? I am specifically interested in mousemove and drag events.

Thanks

Answer 1

What do you mean? Events that trigger javascripts?

If so then yes, the triggered script is remembered and put on the call stack.

Javascript is single threaded — so an event that triggers a new script will have to wait until all other scripts on the stack are completed before it fires.

So if your drag or mousemove trigger a script then that trigger will be remembered.