[Solved] Given this Angular Web Worker code snippet, ... Given this Angular Web Worker code snippet, what will be logged in the console?const worker = new Worker(new URL('./compute.worker', import.meta.url)); | Angular

Angular - Performance Optimization

Given this Angular Web Worker code snippet, what will be logged in the console?

const worker = new Worker(new URL('./compute.worker', import.meta.url));
worker.onmessage = ({ data }) => console.log('Result:', data);
worker.postMessage(10);

Assuming the worker script doubles the input number and sends it back.

AResult: undefined

BResult: 10

CResult: 20

DError: Worker not found

Step-by-Step Solution

Solution:

Step 1: Understand the message flow
The main thread sends 10 to the worker using postMessage(10).
Step 2: Worker doubles the input and sends back
The worker processes 10, doubles it to 20, and sends it back via postMessage.
Step 3: Main thread logs the received data
The onmessage handler logs 'Result: 20'.
Final Answer:
Result: 20 -> Option C
Quick Check:
Input 10 doubled = 20 [OK]

Quick Trick: Worker doubles input, so output is input x 2 [OK]

Common Mistakes:

Assuming worker returns input unchanged
Expecting undefined because of async timing
Thinking worker script is missing causing error

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More Angular Quizzes

Given this Angular Web Worker code snippet, what will be logged in the console?

Step 1: Understand the message flow

Step 2: Worker doubles the input and sends back

Step 3: Main thread logs the received data

Final Answer:

Quick Check:

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