我想将值从一个组件传递到另一个组件.
I want to pass value from one component to another component.
也就是说,我需要将值从仪表板组件传递给标题组件
i.e., I need to pass value from Dashboard Component to Header Component
这是我的仪表板组件
import{Component}from '@angular/core';
import { Header } from '../../layout/header.component';
export class Dashboard{
showAlert(id : any)
{
setItem(id);
}
}
这是我的 Header 组件
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'header',
templateUrl: './header.component.html',
})
export class Header{
public setItem(id : any)
{
console.log('Exported value'+id)
}
}
但是总是给找不到setItem
我做错了什么,我该如何解决?
What is the mistake i am doing and how can i fix this ?
注意:我在 Angularjs 2 中这样做
Note : I am doing this in Angularjs 2
如果元素引发事件,您可以通过事件绑定来监听它们.参考角度文档 https://angular.io/guide/template-syntax#event-绑定以获得深入的知识.
If the element raises events, you can listen to them with an event binding. Refer to the angular doc https://angular.io/guide/template-syntax#event-binding for in depth knowledge.
仪表板组件
import{Component}from '@angular/core';
import { Header } from '../../layout/header.component';
@Component({
selector: 'dashboard',
templateUrl: './dashboard.component.html',
})
export class Dashboard{
@Output() setItemEvent = new EventEmitter();
showAlert(id : any)
{
this.setItemEvent.emit(id);
}
}
标题组件
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'header',
template: '<dashboard (setItemEvent)="setItem(param)"></dashboard>',
})
export class Header{
public setItem(id : any)
{
console.log('Exported value'+id)
}
}
这篇关于从一个组件调用函数到另一个组件Angularjs 2的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!