# global injection
import AssistiveBall from 'vue-simple-assistive-ball'
Vue.use(AssistiveBall)
...

# component injection
...
<script>
import { AssistiveBall } from 'vue-simple-assistive-ball'

export default {
  components: { AssistiveBall },
  ...
}

<template>
  <div>
    <assistive-ball :data-list="dataList" v-on:ball-touch="touchEvent">
    </assistive-ball>
  </div>
</template>
<script>
export default {
  data() {
    return {
      dataList: ['icon-movie', 'icon-zhihu', 'icon-weibo']
    }
  },

  methods: {
    touchEvent(icon) {
      // do something...
    }
  }
}
</script>