vue组件挂载到全局方法的示例代码

<template>
 <b-alert
  class="alert-wrap pt-4 pb-4"
  :show="isAutoClose"
  :variant="type" dismissible
  :fade="true"
  @dismiss-count-down="countDownChanged"
  @dismissed="dismiss"
  >
   {{msg}}
  </b-alert>
</template>
<script>
export default {
 /**
  * 参考: https://bootstrap-vue.js.org/docs/components/alert
  * @param {string|number} msg 弹框内容
  * @param {tstring} type 弹出框类型 对应bootstrap-vue中variant 可选值有：'primary'、'secondary'、'success'、'danger'、'warning'、'info'、'light'、'dark'默认值为 'info'
  * @param {boolean} autoClose 是否自动关闭弹出框
  * @param {number} duration 弹出框存在时间(单位：秒)
  * @param {function} closed 弹出框关闭，手动及自动关闭都会触发
  */
 props: {
  msg: {
   type: [String, Number],
   default: ''
  },
  type: {
   type: String,
   default: 'info'
  },
  autoClose: {
   type: Boolean,
   default: true
  },
  duration: {
   type: Number,
   default: 3
  },
  closed: {
   type: Function,
   default: null
  }
 },
 methods: {
  dismiss () {
   this.duration = 0
  },
  countDownChanged (duration) {
   this.duration = duration
  }
 },
 computed: {
  isAutoClose () {
   if (this.autoClose) {
    return this.duration
   } else {
    return true
   }
  }
 },
 watch: {
  duration () {
   if (this.duration === 0) {
    if (this.closed) this.closed()
   }
  }
 }
}
</script>
<style scoped>
.alert-wrap {
 position: fixed;
 width: 600px;
 top: 80px;
 left: 50%;
 margin-left: -200px;
 z-index: 2000;
 font-size: 1.5rem;
}
</style>

import Alert from './main.vue'
import Vue from 'vue'
let AlertConstructor = Vue.extend(Alert)
let instance
let seed = 1
let index = 2000
const install = () => {
 Object.defineProperty(Vue.prototype, '$alert', {
  get () {
   let id = 'message_' + seed++
   const alertMsg = options => {
    instance = new AlertConstructor({
     propsData: options
    })
    index++
    instance.id = id
    instance.vm = instance.$mount()
    document.body.appendChild(instance.vm.$el)
    instance.vm.$el.style.zIndex = index
    return instance.vm
   }
   return alertMsg
  }
 })
}
export default install

import Alert from '@/components/alert/index'
Vue.use(Alert)

this.$alert({msg: '欢迎━(*｀∀´*)ノ亻!'})

<template>
 <b-modal
  v-if="!destroy"
  v-model="isShow"
  title="温馨提示"
  @change="modalChange"
  @show="modalShow"
  @shown="modalShown"
  @hide="modalHide"
  @hidden="modalHidden"
  @ok="modalOk"
  @cancel="modalCancel"
  :centered="true"
  :hide-header-close="hideHeaderClose"
  :no-close-on-backdrop="noCloseOnBackdrop"
  :no-close-on-esc="noCloseOnEsc"
  :cancel-title="cancelTitle"
  :ok-title="okTitle">
   <p class="my-4">{{msg}}</p>
 </b-modal>
</template>
<script>
export default {
 /**
  * 参考: https://bootstrap-vue.js.org/docs/components/modal
  * @param {boolean} isShow 是否显示modal框
  * @param {string|number} msg 展示内容
  * @param {boolean} hideHeaderClose 是否展示右上角关闭按钮 默认展示
  * @param {string} cancelTitle 取消按钮文字
  * @param {string} okTitle 确定按钮文字
  * @param {boolean} noCloseOnBackdrop 能否通过点击外部区域关闭弹框
  * @param {boolean} noCloseOnEsc 能否通过键盘Esc按键关闭弹框
  * @param {function} change 事件触发顺序： show -> change -> shown -> cancel | ok -> hide -> change -> hidden
  * @param {function} show before modal is shown
  * @param {function} shown modal is shown
  * @param {function} hide before modal has hidden
  * @param {function} hidden after modal is hidden
  * @param {function} ok 点击'确定'按钮
  * @param {function} cancel 点击'取消'按钮
  * @param {Boolean} destroy 组件是否销毁 在官方并没有找到手动销毁组件的方法，只能通过v-if来实现
  */
 props: {
  isShow: {
   type: Boolean,
   default: true
  },
  msg: {
   type: [String, Number],
   default: ''
  },
  hideHeaderClose: {
   type: Boolean,
   default: false
  },
  cancelTitle: {
   type: String,
   default: '取消'
  },
  okTitle: {
   type: String,
   default: '确定'
  },
  noCloseOnBackdrop: {
   type: Boolean,
   default: true
  },
  noCloseOnEsc: {
   type: Boolean,
   default: true
  },
  change: {
   type: Function,
   default: null
  },
  show: {
   type: Function,
   default: null
  },
  shown: {
   type: Function,
   default: null
  },
  hide: {
   type: Function,
   default: null
  },
  hidden: {
   type: Function,
   default: null
  },
  ok: {
   type: Function,
   default: null
  },
  cancel: {
   type: Function,
   default: null
  },
  destroy: {
   type: Boolean,
   default: false
  }
 },
 methods: {
  modalChange () {
   if (this.change) this.change()
  },
  modalShow () {
   if (this.show) this.show()
  },
  modalShown () {
   if (this.shown) this.shown()
  },
  modalHide () {
   if (this.hide) this.hide()
  },
  modalHidden () {
   if (this.hidden) this.hidden()
   this.destroy = true
  },
  modalOk () {
   if (this.ok) this.ok()
  },
  modalCancel () {
   if (this.cancel) this.cancel()
  }
 }
}
</script>

import Confirm from './main.vue'
import Vue from 'vue'
let ConfirmConstructor = Vue.extend(Confirm)
let instance
let seed = 1
let index = 1000
const install = () => {
 Object.defineProperty(Vue.prototype, '$confirm', {
  get () {
   let id = 'message_' + seed++
   const confirmMsg = options => {
    instance = new ConfirmConstructor({
     propsData: options
    })
    index++
    instance.id = id
    instance.vm = instance.$mount()
    document.body.appendChild(instance.vm.$el)
    instance.vm.$el.style.zIndex = index
    return instance.vm
   }
   return confirmMsg
  }
 })
}
export default install