In Angular templates, which syntax correctly applies the async pipe to an Observable named items$?

easy🧠 Conceptual Q2 of 15

Angular - RxJS and Observables Fundamentals

In Angular templates, which syntax correctly applies the async pipe to an Observable named items$?

A{{ async(items$) }}

B{{ items$.async() }}

C{{ items$ | async }}

D{{ items$ | await }}

Step-by-Step Solution

Solution:

Step 1: Identify correct async pipe usage
The async pipe is used with the pipe operator | followed by async without parentheses.
Step 2: Evaluate each option
{{ items$ | async }} uses the correct syntax: {{ items$ | async }}. {{ items$.async() }} incorrectly uses parentheses. {{ async(items$) }} treats async as a function, which is invalid in templates. {{ items$ | await }} uses a non-existent pipe await.
Final Answer:
{{ items$ | async }} -> Option C
Quick Check:
Async pipe syntax uses | async without parentheses [OK]

Quick Trick: Use '| async' without parentheses to unwrap Observables [OK]

Common Mistakes:

MISTAKES

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