vue3.0学习笔记6---做一个简单的toast

telport的使用

• telport传送门，把你的组件代码传送到你设定id的组件上。首先先创建一个toast的结构。

<template>
  <teleport to="#toast">
    <div class="alert text-center w-50 fixed-bottom mb-5 mx-auto" v-if="isVisible" :class="classObject">
      {
   
   {message}}
    </div>
  </teleport>
</template>

设定三种状态

export type ToastType = 'success' | 'error' | 'default';

传入的参数有:

props: {
  message: String,
  type: {
    type: String as PropType<ToastType>,
    default: 'default'
  }
},

• 编写代码，在setup的时候把模块添加到telport的id为toast的组件上，并且在unmount的时候移除。

import {onUnmounted} from 'vue'

const userCreateDom = (nodeId: string) => {
    const node = document.createElement('div')
    node.id = nodeId;
    document.body.appendChild(node)
    onUnmounted(() => {
        document.body.removeChild(node)
    })
}

export default userCreateDom

• 创建createToast.ts文件，实现创建toast和移除

import {createApp, PropType} from 'vue'
import Toast, {ToastType} from '../components/Toast.vue'

const createToast = (message: string, type: ToastType='default', dismiss?: () => void, timeout: number=2000) => {
    const toast = createApp(Toast, {
        message,
        type
    })
    const mountNode = document.createElement('div')
    document.body.appendChild(mountNode)
    toast.mount(mountNode)
    setTimeout(() => {
        toast.unmount(mountNode)
        document.body.removeChild(mountNode)
        if (dismiss) {
            dismiss()
        }
    }, timeout)
}

export default createToast;

• 调用

const onTap = () => {
  createToast('测试弹框', 'success')
}