使用vux框架，发现this.$vux获取不到，导致Loadin

<div style="padding: 15px;">
            <x-button @click.native="showLoading" type="primary">显示loading(2s后关闭)</x-button>
        </div>

showLoading () {
            this.$vux.loading.show({
                text: 'Loading'
            })
            setTimeout(() => {
                this.$vux.loading.hide()
            }, 2000)
        },

提示报错：Uncaught TypeError: Cannot read property 'loading' of undefined
解决办法：在main.js中引入

import  { LoadingPlugin } from 'vux'
Vue.use(LoadingPlugin)