studyTest/node_modules/@dcloudio/uni-ui/lib/uni-popup/uni-popup.uvue

<template>
  <view class="popup-root" v-if="isOpen" v-show="isShow" @click="clickMask">
    <view @click.stop>
      <slot></slot>
    </view>
  </view>
</template>

<script>
  type CloseCallBack = ()=> void;
  let closeCallBack:CloseCallBack = () :void => {};
  export default {
    emits:["close","clickMask"],
    data() {
      return {
        isShow:false,
        isOpen:false
      }
    },
    props: {
      maskClick: {
        type: Boolean,
        default: true
      },
    },
    watch: {
      // 设置show = true 时，如果没有 open 需要设置为 open
      isShow:{
        handler(isShow) {
          // console.log("isShow",isShow)
          if(isShow && this.isOpen == false){
            this.isOpen = true
          }
        },
        immediate:true
      },
      // 设置isOpen = true 时，如果没有 isShow 需要设置为 isShow
      isOpen:{
        handler(isOpen) {
          // console.log("isOpen",isOpen)
          if(isOpen && this.isShow == false){
            this.isShow = true
          }
        },
        immediate:true
      }
    },
    methods:{
      open(){
        // ...funs : CloseCallBack[]
        // if(funs.length > 0){
        //   closeCallBack = funs[0]
        // }
        this.isOpen = true;
      },
      clickMask(){
        if(this.maskClick == true){
          this.$emit('clickMask')
          this.close()
        }
      },
      close(): void{
        this.isOpen = false;
        this.$emit('close')
        closeCallBack()
      },
      hiden(){
        this.isShow = false
      },
      show(){
        this.isShow = true
      }
    }
  }
</script>

<style>
.popup-root {
  position: fixed;
  top: 0;
  left: 0;
  width: 750rpx;
  height: 100%;
  flex: 1;
  background-color: rgba(0, 0, 0, 0.3);
  justify-content: center;
  align-items: center;
  z-index: 99;
}
</style>