vue2 .sync 修饰符

**创建 工程：
H:\java_work\java_springboot\vue_study

ctrl按住不放 右键 悬着 powershell

H:\java_work\java_springboot\js_study\Vue2_3入门到实战-配套资料\01-随堂代码素材\day04\准备代码\13-sync修饰符

vue --version
vue create v-sync-demo
cd v-sync-demo
npm run serve

App.vue

<template>
  <div class="app">
    <button class="logout" @click="isShow = true">退出按钮</button>
    <BaseDialog :visible.sync="isShow"></BaseDialog>
  </div>
</template>

<script>
import BaseDialog from "./components/BaseDialog.vue";

export default {
  data() {
    return {
      isShow: false,
    };
  },
  components: {
    BaseDialog,
  },
};
</script>

<style>
</style>

BaseDialog.vue

<template>
  <div v-show="visible" class="base-dialog-wrap">
    <div class="base-dialog">
      <div class="title">
        <h3>温馨提示：</h3>
        <button @click="close" class="close">x</button>
      </div>
      <div class="content">
        <p>你确认要退出本系统么？</p>
      </div>
      <div class="footer">
        <button>确认</button>
        <button>取消</button>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    visible: Boolean,
  },
  methods: {
    close() {
      this.$emit("update:visible", false);
    },
  },
};
</script>

<style scoped>
.base-dialog-wrap {
  width: 300px;
  height: 200px;
  box-shadow: 2px 2px 2px 2px #ccc;
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 0 10px;
}
.base-dialog .title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid #000;
}
.base-dialog .content {
  margin-top: 38px;
}
.base-dialog .title .close {
  width: 20px;
  height: 20px;
  cursor: pointer;
  line-height: 10px;
}
.footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 26px;
}
.footer button {
  width: 80px;
  height: 40px;
}
.footer button:nth-child(1) {
  margin-right: 10px;
  cursor: pointer;
}
</style>