vue项目中使用多选框的实例代码

<section class="group-con-search newInp" style="margin:10px;">
      <el-input v-model="searchCon" placeholder="请输入搜索内容" @keyup.13.native="labelSearch">
       <i class="el-icon-search" slot="suffix" @click="labelSearch"></i>
      </el-input>
     </section>
     <div class="tmplmsg_keywords_list">
      <div class="checkbox" v-for="(item, index) in returnDate" :key="index">
       <input
        type="checkbox"
        :id="index"
        @change="currentSelect"
        :value="item"
        v-model="checkedNames"
       >
       <label :for="index" class="label">{{item.keyword_name}}</label>
      </div>
     </div>
     <div class="pitchon">
      <div class="name">
       <span>已选择（1/5）</span>
      </div>
      <div>
       <div class="checkbox list" v-for="(item, index) in returnDateArr" :key="index">
        <input
         type="checkbox"
         :id="index"
         @change="currentSelect"
         :value="item"
         v-model="checkedNames"
        >
       <label :for="index" class="label">{{item.keyword_name}}</label>
      </div>

	data（）{
			return {
			returnDate:[],
			checkedNames: [],
	   returnDateArr: [],
	    searchCon: "", // 搜索内容
}

}

  currentSelect() {
   // checkbox 绑定的是checkedNames数组，选中或取消都存在里面 
   // 把值赋给returnDateArr
   this.returnDateArr = this.checkedNames;

   console.log(this.value)
   
   
  }
  .tmplmsg_keywords_list {
 height: 150px;
 overflow-y: scroll;
 padding-left: 10px;
}
.checkbox {
 display: block;
 height: 40px;
 line-height: 40px;
 padding-left: 12px;
 margin-right: 0;
}
input[type="checkbox"] {
 width: 14px;
 height: 14px;
 display: inline-block;
 text-align: center;
 vertical-align: middle;
 line-height: 18px;
 position: relative;
}
input[type="checkbox"]::before {
 content: "";
 position: absolute;
 : 0;
 left: 0;
 background: #fff;
 width: 100%;
 height: 100%;
 border: 1px solid #d9d9d9;
}
input[type="checkbox"]:checked::before {
 content: "\2713";
 color: #fff;
 border: 1px solid #3190e8;
 background-color: #3190e8;
 position: absolute;
 : 0;
 left: 0;
 width: 100%;
 font-size: 18px;
}
.label {
 vertical-align: sub;
 margin-left: 10px;
}