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Identify the issue in this Angular code snippet:

medium📝 Debug Q6 of 15
Angular - RxJS Operators
Identify the issue in this Angular code snippet:
this.searchControl.valueChanges.debounceTime(300).subscribe(val => console.log(val));
AThe <code>debounceTime</code> operator must be used inside a <code>pipe()</code> method.
BThe <code>valueChanges</code> observable does not support <code>debounceTime</code>.
CThe <code>subscribe</code> method should come before <code>debounceTime</code>.
DThe debounce time value must be a string, not a number.
Step-by-Step Solution
Solution:
  1. Step 1: Understand RxJS pipe usage

    Operators like debounceTime must be used inside the pipe() method.

  2. Step 2: Analyze the code

    The code calls debounceTime directly on valueChanges, which is incorrect.

  3. Final Answer:

    The debounceTime operator must be used inside a pipe() method. -> Option A
  4. Quick Check:

    Operators go inside pipe() [OK]
Quick Trick: Always use debounceTime inside pipe() [OK]
Common Mistakes:
MISTAKES
  • Calling debounceTime directly on observable without pipe
  • Placing subscribe before debounceTime
  • Using incorrect debounceTime argument types

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