Vue.js开发一个全局调用的MessageBox组件

<span style="font-size: 16px;">// /src/components/MessageBox/index.vue<br/><template><br/>    <p class="message-box" v-show="isShowMessageBox"><br/>        <p class="mask" @click="cancel"></p><br/>        <p class="message-content"><br/>        <svg class="icon" aria-hidden="true" @click="cancel"><br/>          <use xlink:href="#icon-delete"></use><br/>        </svg><br/>            <h3 class="title">{{ title }}</h3><br/>            <p class="content">{{ content }}</p><br/>        <p><br/>          <input type="text" v-model="inputValue" v-if="isShowInput" ref="input"><br/>        </p><br/>            <p class="btn-group"><br/>                <button class="btn-default" @click="cancel" v-show="isShowCancelBtn">{{ cancelBtnText }}</button><br/>                <button class="btn-primary btn-confirm" @click="confirm" v-show="isShowConfimrBtn">{{ confirmBtnText }}</button><br/>            </p><br/>        </p><br/>    </p><br/>    </template><br/>    <br/>    <script><br/>    export default {<br/>      props: {<br/>        title: {<br/>          type: String,<br/>          default: '标题'<br/>        },<br/>        content: {<br/>          type: String,<br/>          default: '这是弹框内容'<br/>        },<br/>        isShowInput: false,<br/>        inputValue: '',<br/>        isShowCancelBtn: {<br/>          type: Boolean,<br/>          default: true<br/>        },<br/>        isShowConfimrBtn: {<br/>          type: Boolean,<br/>          default: true<br/>        },<br/>        cancelBtnText: {<br/>          type: String,<br/>          default: '取消'<br/>        },<br/>        confirmBtnText: {<br/>          type: String,<br/>          default: '确定'<br/>        }<br/>      },<br/>      data () {<br/>        return {<br/>          isShowMessageBox: false,<br/>          resolve: '',<br/>          reject: '',<br/>          promise: '' // 保存promise对象<br/>        };<br/>      },<br/>      methods: {<br/>        // 确定,将promise断定为resolve状态<br/>        confirm: function () {<br/>          this.isShowMessageBox = false;<br/>          if (this.isShowInput) {<br/>            this.resolve(this.inputValue);<br/>          } else {<br/>            this.resolve('confirm');<br/>          }<br/>          this.remove();<br/>        },<br/>        // 取消,将promise断定为reject状态<br/>        cancel: function () {<br/>          this.isShowMessageBox = false;<br/>          this.reject('cancel');<br/>          this.remove();<br/>        },<br/>        // 弹出messageBox,并创建promise对象<br/>        showMsgBox: function () {<br/>          this.isShowMessageBox = true;<br/>          this.promise = new Promise((resolve, reject) => {<br/>            this.resolve = resolve;<br/>            this.reject = reject;<br/>          });<br/>          // 返回promise对象<br/>          return this.promise;<br/>        },<br/>        remove: function () {<br/>          setTimeout(() => {<br/>            this.destroy();<br/>          }, 300);<br/>        },<br/>        destroy: function () {<br/>          this.$destroy();<br/>          document.body.removeChild(this.$el);<br/>        }<br/>      }<br/>    };<br/>    </script><br/>    <style lang="scss" scoped><br/>    // 此处省略 ...<br/>    </style>    <br/></span>

<span style="font-size: 16px;">// /src/components/MessageBox/index.js<br/><br/>import msgboxVue from './index.vue';    <br/>// 定义插件对象<br/>const MessageBox = {};<br/>// vue的install方法，用于定义vue插件<br/>MessageBox.install = function (Vue, options) {<br/>  const MessageBoxInstance = Vue.extend(msgboxVue);<br/>  let currentMsg;<br/>  const initInstance = () => {<br/>    // 实例化vue实例<br/>    currentMsg = new MessageBoxInstance();<br/>    let msgBoxEl = currentMsg.$mount().$el;<br/>    document.body.appendChild(msgBoxEl);<br/>  };<br/>  // 在Vue的原型上添加实例方法，以全局调用<br/>  Vue.prototype.$msgBox = {<br/>    showMsgBox (options) {<br/>      if (!currentMsg) {<br/>        initInstance();<br/>      }<br/>      if (typeof options === 'string') {<br/>        currentMsg.content = options;<br/>      } else if (typeof options === 'object') {<br/>        Object.assign(currentMsg, options);<br/>      }<br/>      return currentMsg.showMsgBox()<br/>        .then(val => {<br/>          currentMsg = null;<br/>          return Promise.resolve(val);<br/>        })<br/>        .catch(err => {<br/>          currentMsg = null;<br/>          return Promise.reject(err);<br/>        });<br/>    }<br/>  };<br/>};<br/>export default MessageBox;<br/></span>

<span style="font-size: 16px;">// src/main.js<br/>import MessageBox from './components/MessageBox/index';<br/>Vue.use(MessageBox);<br/></span>

<span style="font-size: 16px;">this.$msgBox.showMsgBox({<br/>    title: '添加分类',<br/>    content: '请填写分类名称',<br/>    isShowInput: true<br/>}).then(async (val) => {<br/>    // ...        <br/>}).catch(() => {<br/>    // ...<br/>});    <br/><br/></span>