Node.js · Theory

Create Connection

Theory

44/723

Create Connection

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

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

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

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

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

Exam tip

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

Example

// Create Connection
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));

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

Short notes

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

Node.js · Theory

Create Connection

← All stacks

Theory

44/723

Create Connection

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

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

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

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

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

Exam tip

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

Example

// Create Connection
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));

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

Short notes

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

Create Connection

Example

Short notes

Questions

Create Connection

Example

Short notes

Questions