Explain Return Like I'm Five

Did you find this post useful? Show some love!
DISCUSSION (1)

So, we can think of a function as a box that does things, right? We put things into the box and the box acts upon them.

For example, imagine a box called "plus". The plus box will add together whatever things we happen to put into it. Like this:

        ┏━━━━━━━━━━┓
1 ────> β”‚ ───┐            ┃
        ┃    1  +  2      ┃
2 ────> β”‚ β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜      ┃
        ┗━━━━━━━━━━┛

Right now, we've used "plus" to add 1 and 2. We have 3, but it's just sitting in our box. We want 3 to be able to get out of the box:

        ┏━━━━━━━━━━┓
1 ────> β”‚ ───┐            ┃
        ┃    1  +  2 ────>  3
2 ────> β”‚ β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜      ┃
        ┗━━━━━━━━━━┛

The return keyword is what allows us to get the 3 out of the box. Now, we give our box 1 and 2, and get 3 in return.

Classic DEV Post from Apr 22

What is your favourite JavaScript framework?

fav framework

Valentin Silvestre
Join dev.to ❀️

The heartbeat of the software industry.