如何从angular2中的.ts文件访问HTML文件的方法? [英] How to access method from .ts file into html file in angular2?

问题描述

我是Angular2的初学者，我创建了一个模式对话框，这是我的HTML文件. index.html文件:-

I am beginners for Angular2, I created a modal dialog, here is my HTML file. index.html file:-

 <button type="button" class="btn btn-default"                    (click)="modal.open()">Open</button>
    
        <modal #modal>
        <modal-header [show-close]="true">
            <h4 class="modal-title">I'm a modal!</h4>
        </modal-header>
        <modal-body>

        Here i want to call show() method from .ts file.
    </modal-body>
    <modal-footer [show-default-buttons]="true"></modal-footer>
    </modal>

单击打开"按钮后，我要调用.ts文件中的show(){....} 我想在<modal-boady></modal-body>标签内显示.

After clicking on Open button I want to call show(){....} that is inside .ts file and I want to display inside <modal-boady></modal-body> tag.

这是我的hello.component.ts文件:-

Here is my hello.component.ts file:-

import {Component, View} from "angular2/core";
@Component({
  selector: 'my-app',
  templateUrl: './index.html'
  })
  
  export class  HeapMemoryGraphComponent implements OnInit {
   constructor(){}
   ngOnInit() {
    this.show();
   }
   show(){
    console.log("=====show()=======");
   }
  }

我该怎么做?请引导我.

How could I do that? please guide me.

谢谢.

推荐答案

有几种方法可以在组件中获取元素句柄. 但是最容易理解的指南在这里.

There are several ways to get element handle in component. But most understandable guide is here.

http://valor-software.com/ngx-bootstrap/#/modals

请在此处检查儿童模式.

<button type="button" class="btn btn-primary" (click)="showChildModal()">Open child modal</button>
<div bsModal #childModal="bs-modal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
  <div class="modal-dialog modal-sm">
    <div class="modal-content">
      <div class="modal-header">
        <h4 class="modal-title pull-left">Child modal</h4>
        <button type="button" class="close pull-right" aria-label="Close" (click)="hideChildModal()">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        I am a child modal, opened from parent component!
      </div>
    </div>
  </div>
</div>

import { Component, ViewChild } from '@angular/core';
import { ModalDirective } from 'ngx-bootstrap/modal';

@Component({
  selector: 'demo-modal-child',
  templateUrl: './child.html'
})
export class DemoModalChildComponent {
  @ViewChild('childModal') public childModal:ModalDirective;

  public showChildModal():void {
    this.childModal.show();
  }

  public hideChildModal():void {
    this.childModal.hide();
  }
}

正如您在此处看到的那样，.ts文件中的组件被引用为模态元素的句柄.

As you can see here, component is referenced the handle of modal element in .ts file.

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