Node.js · Theory

Tracing in Node.js

Theory

620/723

Tracing in Node.js

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

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

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

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

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

Exam tip

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

Example

// Tracing 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));

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

Short notes

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

Node.js · Theory

Tracing in Node.js

← All stacks

Theory

620/723

Tracing in Node.js

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

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

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

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

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

Exam tip

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

Example

// Tracing 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));

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

Short notes

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

Tracing in Node.js

Example

Short notes

Questions

Tracing in Node.js

Example

Short notes

Questions