Node.js · Theory

Control Flow

Theory

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Control Flow

Don’t start Control Flow with jargon. Start with Control Flow on Kabir's board. That is the whole point.

Control Flow order: meaning → one Control Flow step Kabir can write from memory → one limit. Dumping ten features helps nobody.

Skip Control Flow and copy-pasting Control Flow without a dry-run shows up in a small live site.

Control Flow shows up in a small live site. Name Control Flow on Kabir's board, not “a real-world scenario”.

Don’t do this with Control Flow — copy-pasting Control Flow without a dry-run. Interviewers spot it in ten seconds.

Control Flow is not a lonely heading. Kabir ties it to Control Flow on Kabir's board.

One breath for Control Flow, then Control Flow on Kabir's board, then copy-pasting Control Flow without a dry-run. Sit down.

Exam tip

For Control Flow: definition + a small live site + one failure.

Example

// Control Flow
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));

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

Short notes

DefControl Flow — Kabir uses it for Control Flow on Kabir's board in a small live site.
RuleControl Flow → one Control Flow step Kabir can write from memory.
RememberControl Flow + an Express route (a small live site).
UseControl Flow in a small live site (Control Flow on Kabir's board).
TrapControl Flow — copy-pasting Control Flow without a dry-run.
ExControl Flow → Control Flow on Kabir's board.

// Control Flow 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));

Control Flow

Example

Short notes

Questions

Control Flow

Example

Short notes

Questions