详解vue父子组件关于模态框状态的绑定方案

<template>
  <div class="page-xxx">
    //点击打开新增弹窗
    <button>新增</button>
    //点击打开编辑弹窗
    <button>编辑</button>
    //点击打开详情弹窗
    <button>详情</button>
    <Add :showAdd="false"></Add>
    <Edit :showEdit="false"></Edit>
    <Detail :showDetail="false"></Detail>
  </div>
</template>

<div class="page-add">
  <el-dialog :visible="dialogVisible" @close="handleClose"></el-dialog>
</div>
<script>
export default {
  data() {
    return {
      dialogVisible: false,
    }
  },
  methods: {
    handleClose(val) {
      this.dialogVisible= false
    },
  },
}
</script>

<template>
  <div class="page-xxx">
    //点击打开新增弹窗
    <button @click="show = true">新增</button>
    <Add :show.sync="show"></Add>
  </div>
</template>

<div class="page-add">
  <el-dialog:visible="dialogVisible" @close="handleClose"></el-dialog>
</div>
<script>
export default {
  props: {
    show: {
      type: Boolean
    }
  },
  watch: {
    show(value) {
      this.dialogVisible= value
    }
  },
  data() {
    return {
      dialogVisible: false,
    }
  },
  methods: {
    handleClose(val) {
      this.$emit('update:show', false);
    },
  },
}
</script>

<template>
  <div class="page-xxx">
    //点击打开新增弹窗
    <button @click="show = true">新增</button>
    <Add v-model="show"></Add>
  </div>
</template>

<div class="page-add">
  <el-dialog :visible="dialogVisible" @close="handleClose"></el-dialog>
</div>
<script>
export default {
  props: {
    show: {
      type: Boolean
    }
  },
  watch: {
    show(value) {
      this.dialogVisible= value
    }
  },
  data() {
    return {
      dialogVisible: false,
    }
  },
  methods: {
    handleClose(val) {
      this.$emit('input', false)
    },
  },
}
</script>

computed
export default {
  props: {
    show: {
      type: Boolean
    }
  },
  computed: {
    dialogVisible: {
      get() {
        return this.show
      },
      set(value) {
        return this.$emit('input', value)
      },
    },
  },
  methods: {
    handleClose(val) {},
  },
}