选中input 弹出选项框

显示弹窗

首先要在components中新建两个组件 要实现子组件向父组件传值

selest.vue 里面的内容

<template>
  <div>
    <h1>选择管理员</h1>
    <div class="sel" @click="show">{{ str }}</div>
    <template v-if="bol">
      <alt @ok="getData($event)" @cancel="close"></alt>
    </template>
  </div>
</template>

<script>
import Alt from "./alt.vue";
export default {
  name: "Select",
  data() {
    return {
      bol: false,
      str: '',
    };
  },
  components: {
    Alt,
  },
  methods: {
    show() {
      this.bol = true;
    },
    // 获取数据方法
    getData(data) {
      // 关闭弹出层
      this.bol = false;
      console.log(data);
      this.str = data;
    },
    // 关闭弹窗
    close() {
      // 关闭弹出层
      this.bol = false;
    },
  },
};
</script>

<style scoped>
.sel {
  width: 200px;
  height: 40px;
  border: 1px solid #ccc;
  line-height: 40px;
  text-align: center;
  cursor: pointer;
  margin: 0 auto;
}
</style>

alt.vue 里面的内容

<template>
  <div class="mark">
    <div class="alert">
      <!-- 内容 -->
      <div class="cont">
        <div>
          <!-- 左边的列表 -->
          <dl class="left">
            <dt>
              <label><input type="checkbox" v-model="allBol" :checke="allBol" @change="all" />全选</label>
            </dt>
            <dd v-for="(item,index) in arrL" :key="index">
              <label>
                <input type="checkbox" :checked="item.bol" v-model="item.bol" @change="only(index)" />
                <img :src="item.headurl" alt="">
                <span>{{item.name}}</span>
              </label>
            </dd>
          </dl>
        </div>
        <div>
         <dl class="left">
            <dd v-for="(item,index) in arrR" :key="index">
              <label>
                <img :src="item.headurl" alt="">
                <span>{{item.name}}</span>
              </label>
              <em @click="del(item,index)">×</em>
            </dd>
          </dl>
        </div>
      </div>
      <!-- 按钮 -->
      <div class="btns">
        <button @click="sure">确定</button>
        <button @click="cancel">取消</button>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      allBol: false,
      arrL: [
        { name: '花木兰', id: 1, headurl: require('../assets/logo.png'), bol: false },
        { name: '拓跋焘', id: 2, headurl: require('../assets/logo.png'), bol: false },
        { name: '宇文泰', id: 1, headurl: require('../assets/logo.png'), bol: false },
        { name: '宇文成都', id: 1, headurl: require('../assets/logo.png'), bol: false },
        { name: '宇文护', id: 1, headurl: require('../assets/logo.png'), bol: false },
        { name: '宇文拓', id: 1, headurl: require('../assets/logo.png'), bol: false }
      ],
      arrR: []
    }
  },
  methods: {
    // 点击全选
    all() {
      // 清空一个数组
      this.arrR = []; // 第一种
      // this.arrR.length = 0; // 第二种
      this.arrL.map(item => {
        item.bol = this.allBol;
        if(this.allBol) {
          this.arrR.push(item);
        }
      })
    },
    // 点击单选
    only(n) {
     if (this.arrL[n].bol) {
       this.arrR.push(this.arrL[n])
     }else {
       let index = this.arrR.indexOf(this.arrL[n]);
       this.arrR.splice(index,1);
       this.allBol = false
     }
    },
    // 删除
    del(obj, index) {
      let n = this.arrL.indexOf(obj);
      this.arrL[n].bol = false;
      this.arrR.splice(index, 1)
    },
    // 点击确定
    sure() {
      let arr = [];
      this.arrR.map(item => {
        arr.push(item.name)
      })
      this.$emit('ok', arr.join(','));
    },
    // 点击取消
    cancel() {
      this.$emit('cancel')
    },
  }
};
</script>

<style scoped>
.mark {
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.alert{
  background: #fff;
  width: 800px;
  height: 600px;
}
.cont {
  display: flex;
  height: 500px;
}
.cont>div {
  flex: 1;
}
.cont>div:nth-child(1) {
  border-right: 1px #ccc solid;
}
.btns {
  height: 100px;
  text-align: center;
}
.left dd {
  height: 50px;
  margin-bottom: 10px;
  position: relative;
}
.left dd label {
  display: flex;
  height: 50px;
  align-items: center;
  cursor: pointer;
}
.left dd label:hover {
  background: #f0f0f0;
}
.left dd label img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  margin: 0 5px;
}
.left dd em {
  cursor: pointer;
  position: absolute;
  width: 50px;
  height: 50px;
  font-size: 30px;
  text-align: center;
  line-height: 50px;
  right: 0;
  top: 0;
  transition: all 0.8s;
}
.left dd em:hover{
  transform: rotate(360deg);
}

</style>

在App.vue 里面写

<template>
  <div id="app">
    <div id="nav">
      <router-link to="/select">选择管理员</router-link>
    </div>
    <router-view/>
  </div>
</template>

在router 下面的index.js 里面添加路由

import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  },
  {
    path: '/about',
    name: 'About',
    component: function () {
      return import('../views/About.vue')
    }
  },
  // 创建的路由
  {
    path: '/select',
    name: 'Select',
    component: () => import('../components/selest.vue')
  }
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router