Javascript 点击按钮,在ngfor内加载多个组件
我正在创建一个具有角度材质的项目。我想在我的项目中集成手风琴面板。在扩展面板中加载动态组件时,我遇到了一个问题。我想根据条件在扩展面板内加载不同类型的动态组件。 以下是代码:Javascript 点击按钮,在ngfor内加载多个组件,javascript,angular,Javascript,Angular,我正在创建一个具有角度材质的项目。我想在我的项目中集成手风琴面板。在扩展面板中加载动态组件时,我遇到了一个问题。我想根据条件在扩展面板内加载不同类型的动态组件。 以下是代码: import {Component, NgModule, QueryList,ViewChildren, ComponentFactoryResolver, ViewContainerRef, TemplateRef, ViewEncapsulation} from '@angular/core' import { Tcp
import {Component, NgModule, QueryList,ViewChildren, ComponentFactoryResolver, ViewContainerRef, TemplateRef, ViewEncapsulation}
from '@angular/core'
import { TcpModuleComponent } from './tcp-module/tcp-module.component'
import { UdpComponent } from './udp/udp.component'
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
ref:any;
viewContainerRef = [];
@ViewChildren('target', {read: ViewContainerRef}) container: QueryList<ViewContainerRef>
constructor(private resolver: ComponentFactoryResolver) {}
category = [{
"type":"TCP&UDP Port",
"code":"port",
"locked":false
},
{
"type":"DHCP",
"code":"dhcp",
"locked":true
},
{
"type":"ALG",
"code":"alg"
},
{
"type":"Tracert",
"code":"tracert"
},
{
"type":"Bandwidth",
"code":"bandwidth"
},
];
panelOpenState: boolean = false;
allExpandState = false;
ngOnInit() {
console.log(this.category)
}
loadComponent(type,item,comp){
if(item.locked == true){
type._toggle();
return
}
let componentRef;
let componentFactory;
if(item.code == "port"){
this.container.toArray().map((viewContainerRef, i) => {
componentFactory = this.resolver.resolveComponentFactory(TcpModuleComponent);
componentRef = viewContainerRef.createComponent(componentFactory);
this.ref = componentRef;
// this.viewContainerRef.push(viewContainerRef)
return
});
}
if(item.code == "dhcp"){
this.container.toArray().map((viewContainerRef, i) => {
componentFactory = this.resolver.resolveComponentFactory(UdpComponent);
componentRef = viewContainerRef.createComponent(componentFactory);
this.ref = componentRef
return
});
}
}
}
import{Component,NgModule,QueryList,ViewChildren,ComponentFactoryResolver,ViewContainerRef,TemplateRef,ViewEncapsulation}
从“@角度/核心”
从“./tcp module/tcp module.component”导入{TcpModuleComponent}
从“./udp/udp.component”导入{UdpComponent}
@组成部分({
选择器:'应用程序根',
templateUrl:“./app.component.html”,
样式URL:['./app.component.css']
})
导出类AppComponent{
参考:任何;
viewContainerRef=[];
@ViewChildren('target',{read:ViewContainerRef})容器:QueryList
构造函数(专用冲突解决程序:ComponentFactoryResolver){}
类别=[{
“类型”:“TCP和UDP端口”,
“代码”:“端口”,
“锁定”:false
},
{
“类型”:“DHCP”,
“代码”:“dhcp”,
“锁定”:true
},
{
“类型”:“ALG”,
“代码”:“alg”
},
{
“类型”:“Tracert”,
“代码”:“tracert”
},
{
“类型”:“带宽”,
“代码”:“带宽”
},
];
panelOpenState:boolean=false;
allExpandState=false;
恩戈尼尼特(){
console.log(this.category)
}
loadComponent(类型、项目、组件){
如果(item.locked==true){
类型。_toggle();
返回
}
让组件引用;
让零部件工厂;
如果(项目代码==“端口”){
this.container.toArray().map((viewContainerRef,i)=>{
componentFactory=this.resolver.resolveComponentFactory(TcpModuleComponent);
componentRef=viewContainerRef.createComponent(componentFactory);
this.ref=组件ref;
//this.viewContainerRef.push(viewContainerRef)
返回
});
}
如果(item.code==“dhcp”){
this.container.toArray().map((viewContainerRef,i)=>{
componentFactory=this.resolver.resolveComponentFactory(UdpComponent);
componentRef=viewContainerRef.createComponent(componentFactory);
this.ref=componentRef
返回
});
}
}
}
Html部分
<mat-accordion >
<mat-expansion-panel *ngFor="let data of category" (click)="loadComponent(panelH,data)">
<mat-expansion-panel-header #panelH >
<mat-panel-title>
<span class="title">{{data.type}}</span>
</mat-panel-title>
</mat-expansion-panel-header>
<div *ngIf="data.code == 'port'">
<ng-container #target></ng-container>
</div>
</mat-expansion-panel>
</mat-accordion >
{{data.type}
我没有找到合适的ide来实现这一点。您可以直接向html添加组件标记,而不是添加ng容器
<mat-accordion >
<mat-expansion-panel *ngFor="let data of category" (click)="loadComponent(panelH,data)">
<mat-expansion-panel-header #panelH >
<mat-panel-title>
<span class="title">{{data.type}}</span>
</mat-panel-title>
</mat-expansion-panel-header>
<TcpModuleComponent *ngIf="data.code === 'port'"></TcpModuleComponent>
<UdpComponent*ngIf="data.code === 'dhcp'"></UdpComponent>
</mat-expansion-panel>
</mat-accordion >
{{data.type}
您是否尝试使用角度指令来管理此问题
我认为对于您的示例,您不需要像“LoadComponent”这样的单击事件。
请看以下示例:
import {Component, NgModule, QueryList,ViewChildren, ComponentFactoryResolver, ViewContainerRef, TemplateRef, ViewEncapsulation}
from '@angular/core'
import { TcpModuleComponent } from './tcp-module/tcp-module.component'
import { UdpComponent } from './udp/udp.component'
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
ref:any;
viewContainerRef = [];
@ViewChildren('target', {read: ViewContainerRef}) container: QueryList<ViewContainerRef>
constructor(private resolver: ComponentFactoryResolver) {}
category = [
{ "type": "TCP&UDP Port", "code": "port", "locked": false },
{ "type": "DHCP", "code": "dhcp", "locked": true },
{ "type": "ALG", "code": "alg" },
{ "type": "Tracert", "code": "tracert" },
{ "type": "Bandwidth", "code": "bandwidth" },
];
panelOpenState: boolean = false;
allExpandState = false;
ngOnInit() {
console.log(this.category)
}
}
}
import{Component,NgModule,QueryList,ViewChildren,ComponentFactoryResolver,ViewContainerRef,TemplateRef,ViewEncapsulation}
从“@角度/核心”
从“./tcp module/tcp module.component”导入{TcpModuleComponent}
从“./udp/udp.component”导入{UdpComponent}
@组成部分({
选择器:'应用程序根',
templateUrl:“./app.component.html”,
样式URL:['./app.component.css']
})
导出类AppComponent{
参考:任何;
viewContainerRef=[];
@ViewChildren('target',{read:ViewContainerRef})容器:QueryList
构造函数(专用冲突解决程序:ComponentFactoryResolver){}
类别=[
{“类型”:“TCP&UDP端口”,“代码”:“端口”,“锁定”:false},
{“type”:“DHCP”,“code”:“DHCP”,“locked”:true},
{“类型”:“ALG”,“代码”:“ALG”},
{“类型”:“跟踪器”,“代码”:“跟踪器”},
{“类型”:“带宽”,“代码”:“带宽”},
];
panelOpenState:boolean=false;
allExpandState=false;
恩戈尼尼特(){
console.log(this.category)
}
}
}
{{data.type}
TcpModuleComponent将在此处插入
UdpComponent将在此处插入
默认组件将插入此处
您能显示错误吗?并且您对多个项目使用了相同的id=>“#panelH”我不明白这个目的。没有错误。。我只是想知道如何在这里添加多个组件
<div class="row">
<div class="col-md-12 mt-5 ml-5">
<mat-accordion>
<mat-expansion-panel *ngFor="let data of category">
<mat-expansion-panel-header>
<mat-panel-title>
<span class="title">{{data.type}}</span>
</mat-panel-title>
</mat-expansion-panel-header>
<span [ngSwitch]="data.code">
<div *ngSwitchCase="'port'">
TcpModuleComponent will insert here
</div>
<div *ngSwitchCase="'dhcp'">
UdpComponent will insert here
</div>
<div *ngSwitchDefault>
Default component will insert here
</div>
</span>
</mat-expansion-panel>
</mat-accordion>
</div>
</div>