Angular - HTTP Client
Which of the following is the correct way to add a header named
Authorization with value Bearer token123 using Angular's HttpHeaders?Which of the following is the correct way to add a header named Authorization with value Bearer token123 using Angular's HttpHeaders?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall HttpHeaders usage
HttpHeaders is immutable; usesetmethod to add headers.Step 2: Check each option
Only new HttpHeaders().set('Authorization', 'Bearer token123') usesnew HttpHeaders().set()correctly; others are invalid syntax or methods.Final Answer:
new HttpHeaders().set('Authorization', 'Bearer token123') -> Option AQuick Check:
Use set() on new HttpHeaders() = B [OK]
Quick Trick: Use new HttpHeaders().set() to add headers [OK]
Common Mistakes:
MISTAKES- Trying to pass headers directly to constructor
- Using non-existent methods like append or add
- Not creating a new HttpHeaders instance first
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