Angular - Lifecycle Hooks
Which lifecycle hook is called immediately after Angular has initialized all data-bound properties of a component?
Which lifecycle hook is called immediately after Angular has initialized all data-bound properties of a component?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the purpose of ngOnInit
ngOnInit runs once after Angular sets all input properties, perfect for initialization.Step 2: Compare with other hooks
ngOnChanges runs before ngOnInit if inputs change; ngAfterViewInit runs after the view is initialized; ngDoCheck runs during change detection.Final Answer:
ngOnInit -> Option BQuick Check:
Initialization hook = ngOnInit [OK]
Quick Trick: Initialization after inputs = ngOnInit [OK]
Common Mistakes:
- Confusing ngOnChanges with ngOnInit
- Thinking ngAfterViewInit runs first
- Assuming ngDoCheck is for initialization
Master "Lifecycle Hooks" in Angular
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