What is the proper way to utilize Vue and Buefy Tab components?

I'm currently designing a Vue page that includes the Buefy b-tab element. My request is quite simple, as outlined below:

The page consists of a Buefy Tab element and a button.

https://i.sstatic.net/TkiVYfJj.png

Upon clicking the tick button, it should display Tab 1 and Tab 3

https://i.sstatic.net/itkhtxbj.png

Please review my code in the CodePen link provided below:

https://codepen.io/aedyucheng/pen/GRaWKoY?editors=1010

In my CodePen demo, there's something odd - If Tab 2's label is set to label="Tab 2", Tab 1's label doesn't show up...

<b-tab-item label="Tab 2">
   <div>Tab 2 Content</div>
</b-tab-item>

However, if I change Tab 2's label to be within a <template #header> tag, then Tab 1 displays correctly. Why is this happening...?

<b-tab-item>
   <template #header>
      <span>Tab 2</span>
   </template>
   <div>Tab 2 Content</div>
</b-tab-item>

I can't seem to figure out why this is occurring. Even after consulting ChatGPT, it continues to provide irrelevant responses without addressing the underlying issue. Can anyone shed light on why only <template #header> works in my scenario?

javascriptcssvue.jsbuefy

Answer №1

One important thing to keep in mind when using v-if to toggle tab components is to include a key attribute with a unique value on each b-tab-item. This allows Vue to properly diff the new list of nodes against the old list and accurately render the components.

<b-tab-item key="1" v-if="showAllTabs">
  <template #header>
    <span>Tab 1</span>
  </template>
  <div> Tab 1 content</div>
</b-tab-item>

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