Angular - Change Detection
What is the main reason to use
ChangeDetectionStrategy.OnPush in an Angular component?What is the main reason to use ChangeDetectionStrategy.OnPush in an Angular component?
easy🧠 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand OnPush behavior
OnPush tells Angular to check for changes only when input properties change or events inside the component happen.Step 2: Compare with other options
It does not disable change detection or force checks on every event, but optimizes performance by limiting checks.Final Answer:
To improve performance by checking for changes only when inputs change or events occur -> Option AQuick Check:
OnPush improves performance = A [OK]
Quick Trick: OnPush triggers checks only on input or event changes [OK]
Common Mistakes:
MISTAKES- Thinking OnPush disables change detection
- Assuming OnPush checks on every event
- Believing OnPush updates without input changes
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