调用函数从一个组件到另一个组件Angularjs 2 [英] Call function from one component to another component Angularjs 2
问题描述
我想将值从一个组件传递到另一个组件。
即,我需要将值从Dashboard组件传递到标头组件
这是我的信息中心组件
import {Component} from' @角/芯';来自'../../layout/header.component'的
import {Header};
导出类仪表板{
showAlert(id:any)
{
setItem(id);
}
}
这是我的标题组件
从'@ angular / core'导入{Component,OnInit};
@Component({
selector:'header',
templateUrl:'。/ header.component.html',
})
导出类标题{
public setItem(id:any)
{
console.log('导出值'+ id)
}
}
但总是给予找不到setItem
什么是我正在做的错误,我该如何解决这个问题?
注意:我在Angularjs 2中这样做
如果元素引发事件,您可以使用事件绑定来侦听它们。请参阅角度文档 https://angular.io/guide/template-syntax#event <-b> 信息中心组件 标题组件 I want to pass value from one component to another component. i.e., I need to pass value from Dashboard Component to Header Component Here is my Dashboard Component Here is my Header component But it is always giving Cannot find setItem What is the mistake i am doing and how can i fix this ? Note : I am doing this in Angularjs 2 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. Dashboard Component Header component
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从'@ angular / core'导入{Component};来自'../../layout/header.component'的
import {Header};
@Component({
selector:'dashboard',
templateUrl:'./dashboard.component.html',
})
export class Dashboard {
@Output()setItemEvent = new EventEmitter();
showAlert(id:any)
{
this.setItemEvent.emit(id);
}
}
从'@ angular / core'导入{Component,OnInit};
@Component({
selector:'header',
template:'< dashboard(setItemEvent)=setItem(param)>< / dashboard>',
})
导出类标题{
public setItem(id:any)
{
console.log('导出值'+ id)
}
}
import{Component}from '@angular/core';
import { Header } from '../../layout/header.component';
export class Dashboard{
showAlert(id : any)
{
setItem(id);
}
}
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)
}
}
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);
}
}
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)
}
}