Angular 2 Checkbox preventDefault

问题

I am making a Bootstrap checkbox dropdown and the options is wrapped in an <a> tag that handles the click, but I also have a <input type="checkbox"> inside the a-tag.

My problem occurs when the user is pressing on the actual checkbox instead of just the <a> element. Both are clicked and some conflict happen. The checkbox checked-state should be inverted but isn't.

In Angular1 it worked to just use preventDefault() on the checkbox-click, but in my angular2-test it stops the checkbox from updating its state.

Need help with what I am doing wrong.

<ul>
    <li *ngFor="#option of options">
    <a href="" role="menuitem" tabindex="-1" (click)="setSelected($event, option)">
        <input type="checkbox" [checked]="isSelected(option)" (click)="checkboxClick($event)" /> {{ option.name }}
    </a>
  </ul>

Plunker: https://plnkr.co/edit/6D5GQ9mnaMALNnPzf5Na

I want the same behaviour when clicking on the checkboxes as clicking on the links to the right.

回答1:

You should check this.

https://plnkr.co/edit/jyX1hGNlRk0dNsR0XMXU?p=preview

<ul>
    <li *ngFor="#option of options">
            <a href="#" role="menuitem" tabindex="-1" (click)="setSelected($event, option)">
            <input type="checkbox" [checked]="isSelected(option)" (keyup)="checkboxClick($event)" /> {{ option.name }}
            </a>
     </li>
</ul>

回答2:

Just add ;false to the event handler expression. Returning false results in preventDefault()

<input type="checkbox" [checked]="isSelected(option)" (click)="checkboxClick($event);false" /> {{ option.name }}

You get the same effect if you return false in checkboxClick()

回答3:

Why don't you use event.stopPropagation()? It is stopping the click to propagate from checkbox to the a click handler...

来源：https://stackoverflow.com/questions/36017793/angular-2-checkbox-preventdefault

标签

checkbox

angular