Angular中input和output使用

// 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