I don't understand function return in javascript

Question

Can anyone explain why javascript return statement is used in function? when and why we should use it?

Please help me.

Answer 1

it's used to return a value from the function.

Let's say you want a function to do some calculation... for a simple example, like calculate a div box's left position on the browser screen.

you call the function and give it the html selector, then the function 'returns' you the left position value.