在“ downMouseBtn(event)”事件处理程序中,
我创建了元素<div id ="rectangle"></ div>
我需要为创建的项目创建一个eventListener。
如何创建它? 要添加代码的哪一部分?
我需要处理动态生成项目的mouseClick事件。
import { Component, OnInit, ViewChild, ElementRef, Renderer2 } from '@angular/core';
@Component({ selector: 'app-editor', templateUrl:'./editor.component.html', styleUrls: ['./editor.component.css']})
export class EditorComponent implements OnInit {
constructor(private renderer: Renderer2, private elRef: ElementRef) { }
ngOnInit() { }
downMouseBtn(event) {
this.rectangle = document.createElement('div'); /*dynamically create element*/
this.rectangle.setAttribute("id", "rectangle"); /*set id for element*/
this.renderer.appendChild(this.editorPhotoWrapper.nativeElement, this.rectangle); /*add element via renderer*/
/* problemAreaStart */
this.renderer.listen(this.rectangle.nativeElement, 'click', (event) => {
console.log("test");
});
/* problemAreaStop */
}
}
答案 0 :(得分:0)
尝试一下
import { Component, OnInit, ViewChild, ElementRef, Renderer2 } from '@angular/core';
@Component({ selector: 'app-editor', templateUrl:'./editor.component.html', styleUrls: ['./editor.component.css']})
export class EditorComponent implements OnInit {
constructor(private renderer: Renderer2, private elRef: ElementRef) { }
ngOnInit() { }
downMouseBtn(event) {
this.rectangle = this.renderer.createElement('div'); /*dynamically create element*/
// this.rectangle.setAttribute("id", "rectangle"); /*forget this by now*/
this.renderer.appendChild(this.editorPhotoWrapper.nativeElement, this.rectangle); /*add element via renderer*/
/* problemAreaStart */
this.renderer.listen(this.rectangle, 'click', (event) => {
console.log("test");
});
/* problemAreaStop */
}
}
让我们尽量不要直接接触DOM,请尽可能使用render2。
这是alligator.io上一篇文章的链接,这是我回答的基础:
https://alligator.io/angular/using-renderer2/