JavaScript! [removed] = someFunction and [removed] = someFunction()

Question

Is there a difference between:

1. window.onload = someFunction;

2. window.onload = someFunction();

Th

Answer 1

window.onload = someFunction; assigns a function to onload.

window.onload = someFunction(); calls a function and assigns its return value to onload. (This is not desirable unless the return value of that function is another function).

What if we Have to pass some parameter to the function

Usually you define a new function which does nothing except call the original function with some arguments, then you assign the new function to the event handler.