Can't get visual studio code to give me output

I have downloaded vs code. I want to write code and see it and learn how to code. When I try to see it, I get this error will not connect to local host. I have watched 3 videos and I can't get it to work thanks

Keyword: JavaScript

JavaScript Microsoft Visual Studio Desktop Application

I want to apply

Software Development

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UI Developer for AI-Powered Logistics Platform

N/D

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