这些是我的代码
child.component.ts
import { Component, Input, OnInit, EventEmitter, Output } from '@angular/core';
import { DomSanitizer } from "@angular/platform-browser";
@Component({
selector: 'child-component',
templateUrl: './child.component.html',
})
export class ChildComponent implements OnInit {
@Input() dataFromParent: String;
@Output() sendDataToParent = new EventEmitter<string>();
htmldata:any;
constructor(private sanitizer: DomSanitizer){
}
ngOnInit() {
this.htmldata = '<input type="text" #data><button (click)="_sendDataToParent(data.value)">Send event to parent</button>';
console.log('This is data from parents', this.dataFromParent);
console.log('this.htmldata', this.htmldata);
}
_sendDataToParent(data:string) {
console.log('you clicked');
this.sendDataToParent.emit(data);
}
makeSanitize(str: any)
{
return this.sanitizer.bypassSecurityTrustHtml(str);
}
}
child.component.html
<h2>Child Component</h2>
<p>{{dataFromParent}}</p>
<span [innerHTML]="makeSanitize(htmldata)"></span>
app.component.html
<h2>Parent Component</h2>
<p>
{{dataFromChild}}
</p>
<hr>
<hr>
<hr>
<child-component
[dataFromParent]="'This is data sent from parent'"
(sendDataToParent)="eventFromChild($event)">
</child-component>
app.component.ts
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: [ './app.component.css' ]
})
export class AppComponent {
name = 'Angular 6';
dataFromChild;
eventFromChild(data) {
console.log(data);
this.dataFromChild = data;
}
}
我计划动态生成htmldata
。
htmldata
在其子组件中具有innerhtml值。 Innerhtml的Click事件也不起作用。
我要填写输入,然后单击Send event to parent
按钮。但是事件未触发。
亲爱的开发人员,请帮助我
您正在用字符串值编码“角度”,然后将其放入DOM。需要编译角度代码以将其转换为实际的html / js代码
因此您需要首先编写“ onclick”而不是“(click)”但随后您将遇到其他错误,例如“未定义_sendDataToParent”,因为您需要该函数带有“脚本”标记]
请参见此处测试https://stackblitz.com/edit/angular-4s9fzs
最后,在字符串中生成角度代码,然后将其放入DOM中,您可能不想这样做