Node.js · Theory

push()

Theory

115/723

push()

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

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

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

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

Viva — what is push() (function)? Then show the smallest push function example you can type. Then name the trap.

Exam tip

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

Example

// push()
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));

push(): find user 2, then list names. Say both prints.

Short notes

Defpush() (function) — a short push function example in a script or API on localhost.
Rulethe smallest push function example you can type
Traponly saying “push function” with no example
Usea script or API on localhost

Node.js · Theory

push()

← All stacks

Theory

115/723

push()

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

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

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

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

Viva — what is push() (function)? Then show the smallest push function example you can type. Then name the trap.

Exam tip

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

Example

// push()
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));

push(): find user 2, then list names. Say both prints.

Short notes

Defpush() (function) — a short push function example in a script or API on localhost.
Rulethe smallest push function example you can type
Traponly saying “push function” with no example
Usea script or API on localhost

push()

Example

Short notes

Questions

push()

Example

Short notes

Questions