话不多,先上一段视频,看看是不是你们需要的效果 

附上代码

<template><div class="home"><div class="home-box"><!-- <menuHtml></menuHtml> --><div class="home-div"><div style="margin-top: 20px;display:flex;justify-content: space-between;"><div><span class="blueBlock">&nbsp;</span><span class="title">问卷编辑</span></div><div><span style="color:#F56C6C;">问卷编辑完成,千万不要忘记点击保存哦<i class="el-icon-thumb"style="transform: rotate(90deg);"></i></span><el-button type="primary" plain size="mini" icon="el-icon-s-claim"@click="save('form')">保存</el-button></div></div><el-form abel-position='top' :model="form" ref="form"><div class="content"><div class="content-top"><el-form-item prop="title" :rules="{required: true, message: '  ', trigger: 'blur' }"><el-input size="small" v-model="form.title" placeholder="请输入问卷标题"><el-button slot="append" @click="addQuestion()" icon="el-icon-circle-plus-outline">添加问题</el-button></el-input></el-form-item></div><div class="content-box"><div class="content-center" v-for="(question,index) in form.questionList"><el-form-item><el-radio v-model="question.type" :label="1">单选</el-radio><el-radio v-model="question.type" :label="2">多选</el-radio><el-radio v-model="question.type" :label="3">开放式问题</el-radio></el-form-item><el-form-item class="question" :prop="'questionList.'+index+'.name'":rules="{required: true, message: '', trigger: 'blur' }"><el-input placeholder="请输入问题" size="small" v-model="question.name"><template slot="prepend">Q{{index+1}}.</template></el-input><div @click="delQuestion(index)"><i class="el-icon-delete-solid"></i><span>删除</span></div></el-form-item><el-form-item v-if="question.type==3" :prop="'questionList.'+index+'.answer2'":rules="{required: true, message: '  ', trigger: 'blur' }"><el-input type="textarea" :rows="4" placeholder="请输入答案" v-model="question.answer2"resize="none"></el-input></el-form-item><el-form-item v-else><div class="answer" v-for="(answer,index1) in question.answerList"><el-form-item :prop="'questionList.'+index+'.answerList.'+index1+'.name'" :rules="{required: true, message: '  ', trigger: 'blur' }"><el-input size="small" placeholder="请输入答案" v-model="answer.name"><template slot="prepend">{{chars[index1]}}.</template></el-input></el-form-item><div class="answer-right"><el-button @click="delAnswer(index,index1,question)" size="mini"icon="el-icon-minus" circle type="danger" plain></el-button><el-button v-if="question.answerList.length==index1+1"@click="addAnswer(index,index1)" size="mini" icon="el-icon-plus" circletype="primary" plain></el-button></div></div></el-form-item><el-form-item label="正确答案" v-if="question.type==1" :prop="'questionList.'+index+'.answer'" :rules="{required: true, message: '  ', trigger: 'blur' }"><el-select size="mini" v-model="question.answer" placeholder="请选择答案"><el-option v-for="(item,index2) in question.answerList" :key="index2":label="chars[index2]" :value="index2"></el-option></el-select></el-form-item><el-form-item label="正确答案" v-if="question.type==2":prop="'questionList.'+index+'.answer1'" :rules="{required: true, message: '  ', trigger: 'blur' }"><el-select size="mini" multiple v-model="question.answer1" placeholder="请选择答案"><el-option v-for="(item,index2) in question.answerList" :key="index2":label="chars[index2]" :value="index2"></el-option></el-select></el-form-item></div></div></div></el-form></div></div></div>
</template><script>// import menuHtml from '../../../view/leaf-content/menuHtml.vue'export default {name: 'addWjByTeacher',components: {// menuHtml,},props: [],data() {return {chars: ['A', 'B', 'C', 'D'],form: {title: '',// questionList: [],questionList: [{type: 1, //1.单选,2:多选,3开放式问题questionTitle: '',answerList: [{}],answer: '', //单选答案answer1: [], //多选答案answer2: '', //开放式问题答案}, {type: 2, //1.单选,2:多选,3开放式问题questionTitle: '',answerList: [{}],answer: '',answer1: [],answer2: '',}, {type: 3, //1.单选,2:多选,3开放式问题questionTitle: '',answerList: [{}],answer: '',answer1: [],answer2: '',}],}}},methods: {addQuestion() { //添加问题this.form.questionList.push({type: 1, //1.单选,2:多选,3开放式问题questionTitle: '',answerList: [{}],answer: '',});},delQuestion(index) { //删除问题this.form.questionList.splice(index, 1);},addAnswer(questionIndex, answerIndex) { //添加答案console.log(answerIndex);if (answerIndex < 3) {this.form.questionList[questionIndex].answerList.push({});}},delAnswer(questionIndex, answerIndex, question) { //删除答案if (answerIndex >= 1) {this.form.questionList[questionIndex].answerList.splice(answerIndex, 1);}//判断单选还是多选，要一同清空掉答案if (question.type == 1) {// this.form.questionList[questionIndex].answerListquestion.answer = "";} else if (question.type == 2) {question.answer1 = "";}},save(formName) { //保存问题this.$refs[formName].validate((valid) => {if (valid) {alert('submit!');} else {console.log('error submit!!');return false;}});},},mounted() {},destroyed() {},created() {}}
</script><style scoped>@import '../../../../assets/css/screenBase.css';.home {margin-top: 100px;}.home-box {margin: 0 auto;display: flex;align-items: flex-start;width: 1000px;justify-content: center}.home-div {width: 1000px;height: 650px;background-color: #fff;border-radius: 10px;/* 	padding-top: 20px; */padding-right: 40px;padding-left: 40px;/* padding-bottom: 20px; */}.blueBlock {height: 8px;width: 2px;background-color: #226cd3;margin-right: 10px;}.title {font-weight: 600;font-size: 24px;}.content {display: flex;flex-direction: column;align-items: flex-start;width: 900px;}.el-form-item {margin-bottom: 0px;}.content-top {margin-top: 20px;display: flex;}.content-top /deep/ input {width: 800px;}.content-center {width: 880px;background-color: #e9f5f136;border-radius: 10px;margin-top: 5px;padding: 10px;box-shadow: 0 2px 4px rgba(0, 0, 0, .12), 0 0 6px rgba(0, 0, 0, .04);}.content-box {/* margin-top: 20px; */padding: 5px;height: 500px;overflow: hidden;overflow-y: auto;}/deep/.el-form--label-top .el-form-item__label {padding: 0px;}.btn {margin-top: 40px;text-align: center;}.question {}.question /deep/.el-form-item__content {display: flex;align-items: flex-start;justify-content: flex-start;}/* .answer /deep/.el-form-item__content {display: flex;align-items: flex-start;justify-content: flex-start;width: 750px;} */.question /deep/ input {width: 550px;}.question div {width: 100px;text-align: center;}.question i {color: #F56C6C;margin-right: 5px;}.answer /deep/ .el-input-group--prepend {width: 500px;}.answer /deep/ .el-input__inner {width: 500px;}.answer-right {width: 100px;display: flex;align-items: flex-start;/* text-align: center; */}.answer-right span {width: 25px;height: 25px;line-height: 25px;text-align: center;display: inline-block;background: #FFFFFF;border-radius: 8px;border: 1px solid #CCD3E7;}.answer-right i {color: #000;font-weight: 600;}.answer {display: flex;align-items: center;}
</style>

最主要的地方,因为我是双层的循环遍历,先看第一层的注意地方

最最最最最最最主要的地方,这是第二层的地方