Universal Code Snippet
1. Hello World Title: Hello World in TypeScript Example – Beginner TS Program Description: Learn how to write your first Hello World program in TypeScript and run it instantly using an online TypeScript compiler.
typescript
console.log("Hello, World!");2. Take User Input & Print Output Title: User Input and Output in TypeScript Example – readline Description: See how to take user input and print output in TypeScript using readline with an online TypeScript compiler.
typescript
import * as readline from 'readline';
const rl = readline.createInterface({ input: process.stdin, output: process.stdout });
rl.question('Enter your name: ', (name: string) => {
console.log(`Hello, ${name}!`);
rl.close();
});3. If-Else / Conditional Logic Title: If-Else Conditional Logic in TypeScript Example – Control Flow Description: Understand how if-else conditional logic works in TypeScript with this simple example using an online TypeScript compiler.
typescript
const age: number = 20;
if (age >= 18) {
console.log("You are an adult.");
} else {
console.log("You are a minor.");
}4. Loops Title: For Loop and While Loop in TypeScript Example – Iteration Guide Description: Learn how to use both for loop and while loop in TypeScript for iteration with this example in an online TypeScript compiler.
typescript
console.log("For loop:");
for (let i: number = 1; i <= 5; i++) {
process.stdout.write(i + " ");
}
console.log();
console.log("While loop:");
let j: number = 1;
while (j <= 5) {
process.stdout.write(j + " ");
j++;
}
console.log();5. Functions / Methods Title: Functions in TypeScript Example – Define and Call a Function Description: Learn how to define and call functions in TypeScript with this simple example you can test in an online TypeScript compiler.
typescript
function add(a: number, b: number): number {
return a + b;
}
console.log("Sum:", add(10, 20));6. Arrays / Lists Title: Arrays in TypeScript Example – Declare, Initialize and Iterate Description: Learn how to declare, initialize, and loop through arrays in TypeScript using this example in an online TypeScript compiler.
typescript
const numbers: number[] = [10, 20, 30, 40, 50];
numbers.forEach((v: number, i: number) => {
console.log(`Element ${i}: ${v}`);
});7. String Operations Title: String Operations in TypeScript Example – Length, Concat & Upper Description: Explore common string operations like length, concatenation, and uppercase in TypeScript using an online TypeScript compiler.
typescript
let str1: string = "Hello";
let str2: string = " World";
console.log("Length:", str1.length);
let combined: string = str1 + str2;
console.log("Concatenated:", combined);
console.log("Uppercase:", combined.toUpperCase());8. Basic Math / Calculator Title: Basic Math Calculator in TypeScript Example – Arithmetic Operations Description: Build a simple arithmetic calculator in TypeScript covering add, subtract, multiply, and divide using an online TypeScript compiler.
typescript
const a: number = 15.0;
const b: number = 4.0;
console.log("Add: ", a + b);
console.log("Subtract:", a - b);
console.log("Multiply:", a * b);
console.log("Divide: ", a / b);FAQ
Q1: What is an online TypeScript compiler?
A: An online TypeScript compiler is a browser-based tool that lets you write, compile, and run TypeScript code without installing anything on your computer. It runs your code on a remote server and returns the output instantly. It's perfect for learning TypeScript, testing small programs, or sharing code snippets quickly.
Q2: Do I need to install anything to run TypeScript online?
A: No installation is required. This online TypeScript compiler runs entirely in your browser — just open the page, type your code, and hit Run. There's no need to set up a local TypeScript environment, configure a compiler, or manage dependencies.
Q3: Does this TypeScript compiler support user input (stdin)?
A: Yes, this online TypeScript compiler supports standard input (stdin), so programs that read user input will work correctly. You can type your input into the provided field before running your code. This makes it easy to test interactive TypeScript programs right in the browser.
Q4: Is this online TypeScript compiler free to use?
A: Yes, this online TypeScript compiler is completely free to use — no account or payment is needed to get started. Just visit the page and start coding immediately. It's ideal for students, hobbyists, and developers who want a quick way to run TypeScript code.
Q5: Can I save and share my TypeScript code online?
A: Yes, this online TypeScript compiler lets you save your code and generate a shareable link with a single click. Anyone with the link can view and run your TypeScript program in their browser. It's a convenient way to collaborate, get help, or showcase your work.
