Node.js · Theory

DAO in Node.js

Theory

333/723

DAO in Node.js

DAO (in node js) is a Node.js topic. In plain words you use it for a short DAO 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 DAO 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 DAO (in node js).

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

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

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

Exam tip

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

Example

// DAO 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));

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

Short notes

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

Node.js · Theory

DAO in Node.js

← All stacks

Theory

333/723

DAO in Node.js

DAO (in node js) is a Node.js topic. In plain words you use it for a short DAO 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 DAO 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 DAO (in node js).

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

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

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

Exam tip

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

Example

// DAO 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));

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

Short notes

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

DAO in Node.js

Example

Short notes

Questions

DAO in Node.js

Example

Short notes

Questions