离子芯片关闭触发器，离子项按钮事件 [英] ion-chip close triggers, ion-item button event

问题描述

我有一个离子项作为按钮，在里面我放置了一个带有十字图标删除事件的离子芯片。单击离子芯片删除按钮时，会触发离子项事件而不是离子芯片事件。甚至 event.stopPropogation 也无效。

I have a ion-item as a button and inside it I placed an ion-chip with a cross icon delete event. When ion-chip delete button is clicked, it triggers the ion-item event not ion-chip event. Even event.stopPropogation is not working.

如何触发离子芯片onclick触发事件？

How can I trigger the ion-chip onclick trigger event?

activity.html

<ion-content>
  <ion-list>
     <button ion-item style="color: #999" (click)="addProject()">
      <span *ngIf="selected_project == null">Project</span>
      <div *ngIf="selected_project != null">
        <ion-chip color="primary">
          <span style="margin-left: 10px"><i class="fa fa-book">&nbsp;{{ selected_project.name }}</i></span>
          <button ion-button clear color="light" (click)="deleteProject($event)">
            <ion-icon name="close-circle"></ion-icon>
          </button>
        </ion-chip>
      </div>
      <ion-icon name="add" item-right></ion-icon>
    </button>
  </ion-list>
<ion-content>

activity.ts

addProject(){
   //some code
}

deleteProject(event){
  event.stopPropagation(); //not working
}

推荐答案

问题不是事件的传播，而是项目是一个按钮。在幕后，Ionic会处理很多事情来处理来自按钮的事件，所以为了使它能够正常工作，您可以将 ion-item 更改为项目而不是具有属性 ion-item 的按钮。请查看 此工作的plunker

The issue is not the propagation of the event, but the item being a button. Behind the scenes Ionic makes a lot of things to handle events from buttons, so in order to make it work, you can change the ion-item to be an item instead of a button with the attribute ion-item. Please take a look at this working plunker

将< button ion-item ...>< / button> 替换为< ion-item tappable ...>< / ion-item> 从UI的角度来看结果完全一样，但这次 event.preventDefault（）将正常运作。

By replacing the <button ion-item ...></button> by a <ion-item tappable ...></ion-item> the result from the UI point of view is exactly the same, but this time the event.preventDefault() will work properly.

查看

  <ion-list>
     <ion-item tappable style="color: #999; cursor:pointer;" (click)="addProject($event)">
      <span *ngIf="selected_project == null">Project</span>
      <div *ngIf="selected_project != null">
        <ion-chip color="primary">
          <span style="margin-left: 10px"><i class="fa fa-book">&nbsp;{{ selected_project.name }}</i></span>
          <button ion-button clear color="light" (click)="deleteProject($event)">
            <ion-icon name="close-circle"></ion-icon>
          </button>
        </ion-chip>
      </div>
      <ion-icon name="add" item-right></ion-icon>
    </ion-item>
  </ion-list>

组件

@Component({...})
export class HomePage {

  public  selected_project = { name: 'DemoProject'}

    constructor() {}

    public addProject(event) {
    event.stopPropagation();
    alert('Add project');
  }

  public deleteProject(event) {
    event.stopPropagation();
    alert('Delete project ');
  }

}

这篇关于离子芯片关闭触发器，离子项按钮事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！