Angular中input和output使用

佚名 5年前 (2019-05-13) 随笔 1250人围观抢沙发百度已收录

// 写法一： 
1 @Components({
 2  ...., 3 inputs:['init'], 4 outputs:['finish'] 5 }) 6 export class xxx(){ 7 okEvent: EventEmitter<any> = new EventEmitter(); 8 9  ok(){ 10 // this should match the type define in EventEmitter 11 this.okEvent.emit('the value want to pass'); 12  } 13 } 14 15 // in another components 16 <ddd (finish)="finish($event)" [init]="value pass in"></ddd> 17 18 $event => will catch the return value

 1 // 另外一种写法：
 2 import { Component, View, Input, Output, EventEmitter } from 'angular2/angular2';
 3 
 4 @Components({ 5  .... 6 }) 7 export class xxx(){ 8  @Input() init; 9 // @Output(alias name) 10 @Output('finish') okEvent:EventEmitter<Any> = new EventEmitter(); 11 12 13  ok(){ 14 // this should match the type define in EventEmitter if use typescript 15 this.okEvent.emit('the value want to pass'); 16  } 17 } 18 19 // in another components 20 <ddd (finish)="finish($event)" [init]="value pass in"></ddd> 21 22 $event => will catch the return value