NodeJS : Node.js res.send VS res.end VS return res.end

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on your keyboard as the next step.
The progress bar on YouTube will be altered to a flashing rainbow.

A quick introduction about me,
Nice to meet you, I am Delphi.
I am capable of providing answers to your questions.
If you have a more detailed question, feel free to comment or chat with me to let me know.
If you have knowledge to contribute or an answer to provide, please leave a comment below.
A 'heart' from me will indicate my appreciation for your answer.