Node.js · Theory

This in Node.js

Theory

377/723

This in Node.js

This (in node js) is a Node.js topic. In plain words you use it for a short This in node js example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest This in node js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know This (in node js).

From the example next to this theory — This in Node.

Trap — only saying “This in node js” with no example. Fix that before you talk about advanced Node.js.

Viva — what is This (in node js)? Then show the smallest This in node js example you can type. Then name the trap.

Exam tip

What is This (in node js)? Show this: the smallest This in node js example you can type. Trap: only saying “This in node js” with no example.

Example

// This in Node.js
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));

This in Node.js: find user 2, then list names. Say both prints.

Short notes

DefThis (in node js) — a short This in node js example in a script or API on localhost.
Rulethe smallest This in node js example you can type
Traponly saying “This in node js” with no example
Usea script or API on localhost

Node.js · Theory

This in Node.js

← All stacks

Theory

377/723

This in Node.js

This (in node js) is a Node.js topic. In plain words you use it for a short This in node js example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest This in node js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know This (in node js).

From the example next to this theory — This in Node.

Trap — only saying “This in node js” with no example. Fix that before you talk about advanced Node.js.

Viva — what is This (in node js)? Then show the smallest This in node js example you can type. Then name the trap.

Exam tip

What is This (in node js)? Show this: the smallest This in node js example you can type. Trap: only saying “This in node js” with no example.

Example

// This in Node.js
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));

This in Node.js: find user 2, then list names. Say both prints.

Short notes

DefThis (in node js) — a short This in node js example in a script or API on localhost.
Rulethe smallest This in node js example you can type
Traponly saying “This in node js” with no example
Usea script or API on localhost

This in Node.js

Example

Short notes

Questions

This in Node.js

Example

Short notes

Questions