You want to preserve existing query parameters when navigating to a new route with additional parameters. Which option should you use in Angular Router?

hard🚀 Application Q8 of 15

Angular - Routing

A{ keepQueryParams: true }

B{ preserveQueryParams: true }

C{ queryParamsHandling: 'preserve' }

D{ queryParamsHandling: 'merge' }

Step-by-Step Solution

Solution:

Step 1: Recall queryParamsHandling options
Angular supports 'merge' and 'preserve' for queryParamsHandling.
Step 2: Identify correct usage
'merge' merges new params with existing; 'preserve' keeps old params without adding new.
Final Answer:
{ queryParamsHandling: 'merge' } -> Option D
Quick Check:
Preserve and add query params = A [OK]

Quick Trick: Use queryParamsHandling: 'merge' to add to existing params [OK]

Common Mistakes:

MISTAKES

Using deprecated preserveQueryParams option
Confusing 'preserve' with 'merge'
Using non-existent keepQueryParams option

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More Angular Quizzes

You want to preserve existing query parameters when navigating to a new route with additional parameters. Which option should you use in Angular Router?

Step 1: Recall queryParamsHandling options

Step 2: Identify correct usage

Final Answer:

Quick Check:

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