Node.js · Theory

WebAssembly

Theory

689/723

WebAssembly

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

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

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

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

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

Exam tip

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

Example

// WebAssembly
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));

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

Short notes

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

Node.js · Theory

WebAssembly

← All stacks

Theory

689/723

WebAssembly

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

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

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

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

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

Exam tip

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

Example

// WebAssembly
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));

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

Short notes

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

WebAssembly

Example

Short notes

Questions

WebAssembly

Example

Short notes

Questions