[Solved] Find the mistake in this Angular RxJS code snippet:import { of } from 'rxjs';... Find the mistake in this Angular RxJS code snippet:import { of } from 'rxjs'; | Angular

Angular - RxJS Operators

Find the mistake in this Angular RxJS code snippet:

import { of } from 'rxjs';
import { map, filter } from 'rxjs/operators';

of(1, 2, 3).pipe(
  map(x => x * 3)
  filter(x => x > 4)
).subscribe(console.log);

Aof() cannot emit multiple values

BUsing map before filter is invalid

Csubscribe should be called before pipe

DMissing comma between operators inside pipe

Step-by-Step Solution

Solution:

Step 1: Check pipe syntax
Operators inside pipe must be separated by commas.
Step 2: Identify error
The code misses a comma between map and filter, causing a syntax error.
Step 3: Validate other options
Operator order is valid, subscribe is correctly called after pipe, and of can emit multiple values.
Final Answer:
Missing comma between operators inside pipe -> Option D
Quick Check:
Operators in pipe() must be comma-separated [OK]

Quick Trick: Separate operators with commas inside pipe() [OK]

Common Mistakes:

MISTAKES

Omitting commas between operators
Calling subscribe before pipe
Assuming operator order is always wrong

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More Angular Quizzes

Find the mistake in this Angular RxJS code snippet:

Step 1: Check pipe syntax

Step 2: Identify error

Step 3: Validate other options

Final Answer:

Quick Check:

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