| import { | |
| Component, Input, | |
| OnInit, | |
| OnChanges, SimpleChanges, SimpleChange | |
| } from '@angular/core'; | |
| @Component({ | |
| selector: 'my-last-name', | |
| template: ` | |
| <h2>Last name: {{_name}} ({{ name }})</h2> | |
| `, | |
| }) | |
| export class OtherChildComponent implements OnChanges, OnInit { | |
| @Input() name: string; | |
| private _name: string; | |
| constructor() {} | |
| ngOnChanges(changes: SimpleChanges) { | |
| const name: SimpleChange = changes.name; | |
| console.log('prev value: ', name.previousValue); | |
| console.log('got name: ', name.currentValue); | |
| this._name = name.currentValue.toUpperCase(); | |
| } | |
| ngOnInit() { | |
| console.log('on init'); | |
| console.log(this.name); | |
| } | |
| } |
Angular @Input() property changes detection
Source: https://ngdev.space/angular-2-input-property-changes-detection-3ccbf7e366d2
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