Vue

HTML

<div id="app">
  <p class="text" v-bind="dynamicAttribute">{{msg}}</p>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

del {
  color: rgba(0, 0, 0, 0.3);
}

Vue

new Vue({
  el: '#app',
  data() {
    return {
       msg: 'Inspect element to test',
       downloadable: true
    }
  },
  computed: {
  	dynamicAttribute() {
      if(this.downloadable) {
         return { [`download`]: "link or w/e" }
      }
      else return null;
    }
  }
})