<div id="app">
  <h4>
    Click on rows
  </h4>
  <ul>
    <li v-for="item in items" :class="{success: item.success}" @click="item.success = !item.success">
      {{ item.text }}
    </li>
  </ul>
  <button :disabled="isDisabled">
    {{ isDisabled ? 'disabled' : 'enabled' }}
  </button>
</div>

.success {
  background-color: green;
}

new Vue({
  el: "#app",
  data: {
    items: [
      {text: 'hello', success: true},
      {text: 'world', success: true},
      {text: 'foo', success: true},
      {text: 'bar', success: true},
    ]
  },
  computed: {
    isDisabled() {
      return this.items.some(i => !i.success);
    }
  }
})