Node.js · Theory

TTY

Theory

32/723

TTY

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

Smallest example: the smallest TTY example you can type. Type it, run it, and say what you see. If you can do that from memory, you know TTY.

From the example next to this theory — TTY: find user 2, then list names.

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

Viva — what is TTY? Then show the smallest TTY example you can type. Then name the trap.

Exam tip

What is TTY? Show this: the smallest TTY example you can type. Trap: only saying “TTY” with no example.

Example

// TTY
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));

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

Short notes

DefTTY — a short TTY example in a script or API on localhost.
Rulethe smallest TTY example you can type
Traponly saying “TTY” with no example
Usea script or API on localhost

Node.js · Theory

TTY

← All stacks

Theory

32/723

TTY

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

Smallest example: the smallest TTY example you can type. Type it, run it, and say what you see. If you can do that from memory, you know TTY.

From the example next to this theory — TTY: find user 2, then list names.

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

Viva — what is TTY? Then show the smallest TTY example you can type. Then name the trap.

Exam tip

What is TTY? Show this: the smallest TTY example you can type. Trap: only saying “TTY” with no example.

Example

// TTY
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));

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

Short notes

DefTTY — a short TTY example in a script or API on localhost.
Rulethe smallest TTY example you can type
Traponly saying “TTY” with no example
Usea script or API on localhost

TTY

Example

Short notes

Questions

TTY

Example

Short notes

Questions