TypeScript Hello World Console
Now that we have installed TypeScript successfully, Let’s start with our first typescript program – TypeScript Hello World.
Open any editor of your choice and type the code given below:
File: helloworld.ts
function greeting(input){
return "Hello, " + input;
}
let message = "World";
console.log(greeting(message));
The typescript code would be transpiled to the respective javascript code. Once, we compile the typescript file it will generate a javascript file.
Commands to compile and run this program:
>tsc helloworld.ts >node helloworld.js
This will result in displaying “Hello World” in the browser’s console.
Hello World
In the next section, we will learn about declaring variables in typescript.