[Angular] Two things about OnChanges Lifecycle hook

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1. ngOnChanges is called before ngOnInit but after constructor()

2. ngOnChanges is called because of @Input() obj, obj‘s reference changes. If you mutate one the object‘s prop, it won‘t trigger ngOnChanges, you have to create new object.

[Angular] Two things about OnChanges Lifecycle hook

标签：for   cal   enc   called   put   angular   inpu   obj   life   

原文地址：https://www.cnblogs.com/Answer1215/p/10335507.html