First Example — Node.js Technical Interview Questions & Answers

First Example

First Example

  • console.log('Hello Node'); save as hello.js; run node hello.js. That is first example. Then a tiny server: require('http') or import, listen on 3000, res.end('Hello').
  • If node is not recognised, Node isn’t installed or PATH is old — open a new terminal.
  • Trap: writing <script> in a .js file you run with node. That’s browser HTML.

Technical Interview Tip: console.log('Hello Node'); node hello.js

Code Examples for First Example

First Example — working example

// First Example
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

First Example: find user 2, then list names. Say both prints.

How to Explain First Example to an Interviewer

First Node command?

node hello.js console.log inside the file