Vue组件教程之Toast(Vue.extend 方式)详解

this.$toast('别点啦，到头啦！')

<template>
 <div class="toast" v-show="visible">
 {{ message }}
 </div>
</template>

<script>
export default {
 name: 'toast',
 data () {
 return {
  message: '', // 消息文字
  duration: 3000, // 显示时长，毫秒
  closed: false, // 用来判断消息框是否关闭
  timer: null, // 计时器
  visible: false // 是否显示
 }
 },
 mounted () {
 this.startTimer()
 },
 watch: {
 closed (newVal) {
  if (newVal) {
  this.visible = false
  this.destroyElement()
  }
 }
 },
 methods: {
 destroyElement () {
  this.$destroy()
  this.$el.parentNode.removeChild(this.$el)
 },
 startTimer () {
  this.timer = setTimeout(() => {
  if (!this.closed) {
   this.closed = true
   clearTimeout(this.timer)
  }
  }, this.duration)
 }
 }
}
</script>

<style lang="scss" scoped>
.toast {
 position: fixed;
 bottom: 15vh;
 left: 28vw;
 min-width: 40vw;
 max-width: 100vw;
 font-size: 26px;
 text-align: center;
 padding: 10px 2vw;
 border-radius: 40px;
 background-color: rgba(0, 0, 0 , 0.6);
 color: rgb(223, 219, 219);
 letter-spacing: 3px;
}
</style>

import Vue from 'vue'
import Toast from '@/components/layer/Toast.vue'

let ToastConstructor = Vue.extend(Toast) // 构造函数
let instance // 实例对象
let seed = 1 // 计数

const ToastDialog = (options = {}) => {
 if (typeof options === 'string') {
 options = {
  message: options
 }
 }
 let id = `toast_${seed++}`
 instance = new ToastConstructor({
 data: options
 })
 instance.id = id
 instance.vm = instance.$mount()
 document.body.appendChild(instance.vm.$el)
 instance.vm.visible = true
 instance.dom = instance.vm.$el
 instance.dom.style.zIndex = 999 + seed
 return instance.vm
}

export default ToastDialog

this.$toast('别点啦，到头啦！')