What is the difference between ngOnInit and ngOnChanges in Angular?
An example of an AI chatbot conversation about the differences between ngOnInit and ngOnChanges in Angular.
Can you explain the difference between ngOnInit and ngOnChanges in Angular?
Sure! ngOnInit is a lifecycle hook that is called once after the component is initialized, while ngOnChanges is called whenever any data-bound input properties change.
When would I use ngOnChanges instead of ngOnInit?
You would use ngOnChanges when you need to respond to changes in input properties, such as updating the view or performing calculations based on new data.
Can you give me an example of when to use each?
Absolutely! Use ngOnInit for initial setup, like fetching data. Use ngOnChanges to react to changes, like updating a chart when new data comes in.
Are there any performance considerations I should be aware of?
Yes, ngOnChanges can be called multiple times, so ensure your logic is efficient to avoid performance issues.
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