Vue.extend()

作用：将ui组件转为js组件

利用Vue.extend()封装一个toast组件

1、components/MyToast/index.vue

<template>
  <div class="container" v-if="show">
    <div>{{ text }}</div>
  </div>
</template>

<script>
export default { name: 'Toast' }
</script>

<style scoped>
.container {
  position: fixed;
  top: calc(50% - 20px);
  left: calc(50% - 50px);
  width: 100px;
  height: 40px;
  text-align: center;
  line-height: 40px;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.8);
  border-radius: 10px;
  box-sizing: border-box;
}
</style>

components/MyToast/index.js

import Vue from 'vue'
import Toast from './index.vue'

const ToastConstructor = Vue.extend(Toast)

function showToast(text, duration = 2000) {
  const toastDOM = new ToastConstructor({
    el: document.createElement('div'),
    data() {
      return {
        text: text,
        show: true
      }
    }
  })
  document.body.appendChild(toastDOM.$el)
  const timer = setTimeout(() => {
    toastDOM.show = false
    toastDOM.$el.parentElement.removeChild(toastDOM.$el)
    clearTimeout(timer)
  }, duration)
}

function toastRegistry() {
  Vue.prototype.$myToast = showToast
}

export default toastRegistry

2、main.js

import toastRegistry from '@/components/MyToast'
Vue.use(toastRegistry)

3、使用

<button @click="$myToast('123',1500)">按钮</button>

 

 

 

 

 

https://www.cnblogs.com/wuqilang/p/12359571.html

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