<div>
  <figure :style="{ 'background': 'url(' + item.main_featured + ') center no-repeat' }">
</div>

I want the style attribute background to return a color if the URL from API is undefined

Example:

If item.featured_photo is not null:

<figure style="background: url('localhost:6969/image.img') center no-repeat">

If item.featured_photo is null:

<figure style="background: #FFF">