[Solved] Which of the following is a correct way to declare a multi-provider in Angular? — Ans: { provide: 'MY_TOKEN', useValue: 'value1', multi: true } | Angular

Angular - Advanced Patterns

Which of the following is a correct way to declare a multi-provider in Angular?

A{ provide: 'MY_TOKEN', useValue: 'value1', multi: true }

B{ provide: 'MY_TOKEN', useClass: MyClass }

C{ provide: 'MY_TOKEN', useValue: 'value1' }

D{ provide: 'MY_TOKEN', useFactory: () => 'value1' }

Step-by-Step Solution

Solution:

Step 1: Identify multi-provider syntax
Multi-provider requires the property multi: true to allow multiple providers for the same token.
Step 2: Check each option for multi: true
Only { provide: 'MY_TOKEN', useValue: 'value1', multi: true } includes multi: true, making it a valid multi-provider declaration.
Final Answer:
{ provide: 'MY_TOKEN', useValue: 'value1', multi: true } -> Option A
Quick Check:
Multi-provider syntax includes multi: true [OK]

Quick Trick: Always add multi: true for multi-provider declarations [OK]

Common Mistakes:

Master "Advanced Patterns" in Angular

9 interactive learning modes - each teaches the same concept differently

More Angular Quizzes

Which of the following is a correct way to declare a multi-provider in Angular?