css - Vue.js dynamic <style> with variables

Question

Is it possible to add the dynamic variable in style?

I mean something like:

<style>
 .class_name{
  background-image({{project.background}});
 }
@media all and (-webkit-min-device-pixel-ratio : 1.5),
 all and (-o-min-device-pixel-ratio: 3/2),
 all and (min--moz-device-pixel-ratio: 1.5),
 all and (min-device-pixel-ratio: 1.5) {
 .class_name{
  background-image({{project.background_retina}});
 } 
}
</style>

Answer 1

The best way to include dynamic styles is to use CSS variables. To avoid inline styles while gaining the benefit (or necessity—e.g., user-defined colors within a data payload) of dynamic styling, use a <style> tag inside of the <template> (so that values can be inserted by Vue). Use a :root pseudo-class to contain the variables so that they are accessible across the CSS scope of the application.

Note that some CSS values, like url() cannot be interpolated, so they need to be complete variables.

Example (Nuxt .vue with ES6/ES2015 syntax):

<template>

<div>
  <style>
    :root {
      --accent-color: {{ accentColor }};
      --hero-image: url('{{ heroImage }}');
    }
  </style>
  <div class="punchy">
    <h1>Pow.</h1>
  </div>
</div>

</template>
<script>

export default {
  data() { return {
    accentColor: '#f00',
    heroImage: 'https://vuejs.org/images/logo.png',
  }},
}

</script>
<style>

.punchy {
  background-image: var(--hero-image);
  border: 4px solid var(--accent-color);
  display: inline-block;
  width: 250px; height: 250px;
}
h1 {
  color: var(--accent-color);
}

</style>

Also created an alternate more involved runnable example on Codepen.