How to open host?

Answer 1

Our Time your question need clarification.
Please, explain better what do you mean.

Answer 2

If it refers to localhost you need to install node.js.
Then in cmd run the command
npm install -g live-server
Open in cmd the file directory in which your js file is and simply write
live-server
It will automatically open a browser tab with a temporary host.
And it will close if you close the cmd window.
That's it!

Answer 3

Thanks