Bird
0
0

Consider this Angular code:

medium📝 Predict Output Q5 of 15
Angular - RxJS Operators
Consider this Angular code:
this.input.valueChanges.pipe(debounceTime(200)).subscribe(val => this.filtered = val);

What happens if the user types continuously without pausing for 1 second?
ANo values are emitted until the user stops typing for 200ms.
BEvery character typed is emitted immediately.
COnly the first character is emitted, others ignored.
DThe subscription throws an error due to rapid input.
Step-by-Step Solution
Solution:
  1. Step 1: Analyze debounceTime with continuous input

    debounceTime waits for a pause of 200ms before emitting the last value.
  2. Step 2: Apply to continuous typing without pause

    Since user never pauses for 200ms, no values emit during typing.
  3. Final Answer:

    No values are emitted until the user stops typing for 200ms. -> Option A
  4. Quick Check:

    Continuous input with debounceTime = D [OK]
Quick Trick: debounceTime waits for pause before emitting [OK]
Common Mistakes:
MISTAKES
  • Expecting immediate emission of every keystroke
  • Thinking debounceTime emits first value instantly
  • Assuming errors occur on rapid input

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Angular Quizzes