How can you efficiently transfer the expression utilized in v-for from the template to the component code?

Question

How can you efficiently transfer the expression utilized in v-for from the template to the component code?

How can I extract the expression within the template that is contained in :class?

<div
  v-for="(user, index) in users"
  :key="index"
  :class="{'bg-yellow-lighter': infoWindowMarker && 
  infoWindowMarker.position.lat === user.position.lat && 
  infoWindowMarker.position.lng === user.position.lng}"
>
// more HTML here
</div>

I've considered using a computed property but it seems like it's not feasible due to the v-for looping over the array.

Is there another way to achieve this or should I consider writing a method and passing user to it?

javascript vuejs2

Answer 1

Answer №1

Create a method with the following structure:

methods:{
   getClass(user){
      return {'bg-yellow-lighter': infoWindowMarker && 
         infoWindowMarker.position.lat === user.position.lat && 
         infoWindowMarker.position.lng === user.position.lng}
   }
}

Your HTML code will then be like this:

<div
  v-for="(user, index) in users"
  :key="index"
  :class="getClass(user)"
>
// Add more HTML content here
</div>

Please note: if you require it to be reactive, it is recommended to turn it into a computed property instead of a method. You can find more information about it at this link.

Answer 2

Create a method with the following structure:

methods:{
   getClass(user){
      return {'bg-yellow-lighter': infoWindowMarker && 
         infoWindowMarker.position.lat === user.position.lat && 
         infoWindowMarker.position.lng === user.position.lng}
   }
}

Your HTML code will then be like this:

<div
  v-for="(user, index) in users"
  :key="index"
  :class="getClass(user)"
>
// Add more HTML content here
</div>

Please note: if you require it to be reactive, it is recommended to turn it into a computed property instead of a method. You can find more information about it at this link.

How can you efficiently transfer the expression utilized in v-for from the template to the component code?

Answer №1

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