1、vue代码

<div class="approval">
        <div class="approval_ul" v-for="(item,key) in approvalList" :key="key">
            <div>
                <el-radio-group v-model="item.jointlySign">
                    <el-radio label="1">会签</el-radio>
                    <el-radio label="2">抄送</el-radio>
                </el-radio-group>
            </div>

            <div style="margin-top: 15px;">
                <el-select v-model="item.approvalPersonnel" placeholder="请选择" size="mini">
                    <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value"></el-option>
                </el-select>
            </div>

            <div class="remove" title="删除" @click="removeClick(key)">x</div>

        </div>
        <div class="operation">
            <el-button size="mini" @click="addClick"><b><i class="el-icon-plus"></i></b></el-button>
        </div>
        <el-button size="mini" @click="submitClick"><b>提交</b></el-button>
    </div>

<script>
export default {
    name: "approval",
    data(){
        return {
            options: [
                {
                    label: '张三',
                    value: '1'
                },{
                    label: '李四',
                    value: '2'
                },
            ],
            approvalList: [
                {
                    jointlySign: '1', // 1: 会签, 2: 抄送
                    approvalPersonnel: '', // 审批人员
                },
            ]
        }
    },
    mounted() {
    },
    methods: {

        /**删除 */
        removeClick(key){
            this.approvalList.splice(key,1);
        },

        /**添加 */
        addClick(){
            let obj = {
                jointlySign: '1', // 1: 会签, 2: 抄送
                approvalPersonnel: '', // 审批人员
            }
            this.approvalList.push(obj)
        },

        /**提交 */
        submitClick(){
            console.log(this.approvalList,'-=-=-=-')
        },
    }
}
</script>

<style scoped lang="scss">
.approval{
    width: 420px;

    .approval_ul{
        border: 1px solid #ccc;
        padding: 10px;
        box-sizing: border-box;
        border-radius: 5px;
        position: relative;
        margin-bottom: 45px;

        .remove{
            width: 20px;
            height: 20px;
            background: #99CCFF;
            position: absolute;
            top: 0;
            right: 0;
            cursor: pointer;
            display: flex;
            justify-content: center;
            align-items: center;
            color: #fff;
            border-radius: 0 5px 0 5px;
        }
    }
    .approval_ul::after {
        content: '';
        position: absolute;
        width: 2px;
        height: 30px;
        background-color: #ccc;
        top: calc(100% + 10px);
        left: 50%;
        transform: translateX(-50%);
    }

    .operation{
        width: 100%;
        display: flex;
        justify-content: center;
    }
}

</style>