You want to send a GET request with multiple query parameters, some optional. How do you build HttpParams to include only parameters with non-empty values?

hard🚀 Application Q8 of 15

Angular - HTTP Client

ACall set() for all parameters regardless of value

BCreate HttpParams with all parameters at once, including empty

CUse append() for all parameters including empty

DUse a loop to call set() only if value is not empty

Step-by-Step Solution

Solution:

Step 1: Filter parameters before adding
To avoid empty query parameters, check each value before adding it to HttpParams.
Step 2: Use set() conditionally
Call set() only for parameters with non-empty values, building HttpParams immutably.
Final Answer:
Use a loop to call set() only if value is not empty -> Option D
Quick Check:
Filter params before set() [OK]

Quick Trick: Add params conditionally to avoid empty query strings [OK]

Common Mistakes:

MISTAKES

Adding empty parameters causing unwanted URL parts
Using append() which adds duplicates
Not reassigning HttpParams after set()

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You want to send a GET request with multiple query parameters, some optional. How do you build HttpParams to include only parameters with non-empty values?

Step 1: Filter parameters before adding

Step 2: Use set() conditionally

Final Answer:

Quick Check:

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