Typescript installation

open VsCode Select terminal command , New command input

npm install -g typescript

To download and install TypeScript

  Create a text suffix .ts The text of

  Enter some appropriate text in the text

const hello : string = "Hello World!"
console.log(hello)

Compile code  

tsc d.ts

  When used for the first time here, it will show compilation failure ​​​​​​​

  Solution open

 

  Open as Administrator Windows PowerShell

Input instruction

set-ExecutionPolicy RemoteSigned

Select Y perhaps A

  Then recompile

This is a compilation success , So let's run this

 

   Compile under the specified package at compile time

tsc .\d.ts --outDir js

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  When using the files in the sub package

node .\js\d.js

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A basic grammar library is also attached

TypeScript Basic grammar | Novice tutorial