Conditional @click with a method in vuejs

问题

This is my for loop:

  <li v-for="(crumb, index) in breadcrumbs" :class="{ 'is-active' : index==breadcrumbs.length-1 }">
    <a href="javascript:void(0)" v-if="index==breadcrumbs.length-1">{{ crumb.name }}</a>
  </li>

@click="methodName" shouldn't be available for the last iteration.

I can check the last iteration with index==breadcrumbs.length-1 Is this possible using apply v-if?

回答1:

There is a possibility by defining the event handler this way:

v-on="condition ? { eventName: () => handler } : {}"

The ?: operator can be used as a shortcut for an if...else statement

In your case it would be like this:

<li v-for="(crumb, index) in breadcrumbs" :class="{ 'is-active' : index==breadcrumbs.length-1 }">
    <a href="javascript:void(0)" v-on="index < breadcrumbs.length-1 ? { click: () => methodName(parms) } : {click: ($event) => $event.preventDefault() }" >{{ crumb.name }}</a>
</li>

Small fiddle

来源：https://stackoverflow.com/questions/53742525/conditional-click-with-a-method-in-vuejs