Angular

1 Contents

1. Bidirectional data flow between components(@Input & @Output)

2 Bidirectional data flow between components

2.1 Sometimes, not work very well. ABANDON

• @Input value and @Output valueChange cannot detect value change when child component valueChange emit a value, especially, Multiple inheritance.
• next, try to use @ViewChild or @ViewChildren

Bidirectional data flow between parent component and child component. It uses @Input and @Output decorates the variables. The more Input and Output details are at official angular guide

// Import Input, Output and EventEmitter
import { Input, Output, EventEmitter } from "@angular/core";