How do we create a web page so that another person can see it?

Answer 1

You need to have a domain

Answer 2

Deshan Madhuranga
You can create a Pen on CodePen and can share it. Same with a JSFiddle.
I prefer CodePen btw.

CodePen: https://codepen.io
JSFiddle: https://jsfiddle.net

Both are amaging sites to share small and simple codes.

But for a moderate sized website, GitHub Pages is good.
See this page: https://pages.github.com

Some examples that I own on:
1. CodePen: https://codepen.io/hanumaukkadapu/full/gqWVgN
2. GitHub: https://hanumaukkadapu.github.io/myCodeBits/color-picker-tool/