功能需求，能灵活新增或删除一个dom元素，在此dom元素中还存在能灵活新增、删除的dom元素。实现后功能图如下：
点击新增策略，能新增整个策略dom
实现思路：定义一个数量和一个数组，然后使用循环遍历展示内容，新增或删除时只需要改变定义的数量，然后删除对应数组元素即可。
示例代码实现：
<div v-for="num in addPlan.strategyNum" :key="num" style="width: 88%; margin: 0 auto;"><accordion style="display: inline-block; width: 90%;"><template slot="header"><span style="background: #fff;">策略名称 {{ addPlan.strategyTempData[num - 1].pro_node }} {{ addPlan.strategyTempData[num - 1].plan_time.toLocaleString() }}</span></template><template slot="content"><bk-form><bk-form-item 名称 :required="true"><bk-selectv-model="addPlan.strategyTempData[num - 1].pro_node"searchable@change="selectProjectNodeHandel(num - 1, addPlan.strategyTempData[num - 1].pro_node)"><bk-option v-for="option in addPlan.projectNodeData":key="option.pro_node":id="option.pro_node":name="option.pro_node"></bk-option></bk-select></bk-form-item><bk-form-item 选择 :required="true"><bk-radio-group v-model="addPlan.strategyTempData[num - 1].pro_pass_point"><bk-radio :value="true">是</bk-radio><bk-radio :value="false">否</bk-radio></bk-radio-group></bk-form-item><bk-form-item 时间 :required="true"><bk-date-picker placement="right" v-model="addPlan.strategyTempData[num - 1].plan_time" :placeholder="$t('order.selectTime')" :type="'datetime'"></bk-date-picker></bk-form-item><bk-form-item><div style="border: 1px solid #E0E0E3;"><el-row v-for="entryNum in addPlan.strategyTempData[num - 1].entryRedLineNum" :key="entryNum" :gutter="5" style="width: 100%; padding: 5px 5px;"><el-col :span="8"><bk-selectv-model="addPlan.strategyTempData[num - 1].redlines_info.entry[entryNum - 1].key"searchable@change="selectEntryRedLineHandel(num - 1, entryNum - 1, addPlan.strategyTempData[num - 1].redlines_info.entry[entryNum - 1].key)"><bk-option v-for="option in addPlan.projectRedLineData":key="option.key":id="option.key":name="option.name"></bk-option></bk-select></el-col><el-col :span="6"><bk-selectv-model="addPlan.strategyTempData[num - 1].redlines_info.entry[entryNum - 1].selectCondition"searchable><bk-option v-for="option in addPlan.strategyTempData[num - 1].redlines_info.entry[entryNum - 1].conditions":key="option.key":id="option.key":name="option.name"></bk-option></bk-select></el-col><el-col :span="6"><bk-input :clearable="true" v-model="addPlan.strategyTempData[num - 1].redlines_info.entry[entryNum - 1].default_value"></bk-input></el-col><el-col :span="4"><bk-button text="true" v-if="addPlan.strategyTempData[num - 1].entryRedLineNum > 1" @click="delEntryRedLineDom(num, entryNum)" :title="$t('order.button.delete')" style="margin-left: 10px;"><i class="devops-icon icon-delete"></i></bk-button><bk-button text="true" v-if="entryNum === addPlan.strategyTempData[num - 1].entryRedLineNum" @click="addEntryRedLineDom(num)" :title="$t('order.button.addFile')" style="margin-left: 10px;"><i class="devops-icon icon-plus"></i></bk-button></el-col></el-row></div></bk-form-item></bk-form></template></accordion><bk-button style="display: inline-block;" :text="true" theme="primary" @click="copyStrategyDom(num)">{{ $t('order.button.copy') }}</bk-button><bk-button style="display: inline-block;" :text="true" theme="warning" @click="delStrategyDom(num)">{{ $t('order.button.delete') }}</bk-button></div>//定义的数据
strategyNum: 1,
strategyTempData: [{pro_node: '',pro_pass_point: false,plan_time: '',redlines_info: {entry: [{key: '',name: '',conditions: [],default_value: '',selectCondition: ''}],exit: [{key: '',name: '',conditions: [],default_value: '',selectCondition: ''}]},entryRedLineNum: 1,exitRedLineNum: 1}
],//新增策略
addStrategyDom () {const newData = {pro_node: '',pro_pass_point: false,plan_time: '',redlines_info: {entry: [{key: '',name: '',conditions: [],default_value: '',selectCondition: ''}],exit: [{key: '',name: '',conditions: [],default_value: '',selectCondition: ''}]},entryRedLineNum: 1,exitRedLineNum: 1}this.addPlan.strategyTempData.push(newData)this.addPlan.strategyNum++
},
//删除策略
delStrategyDom (num) {this.addPlan.strategyTempData.splice(num - 1, 1)this.addPlan.strategyNum--
},
//复制策略
copyStrategyDom (num) {const newData = this.addPlan.strategyTempData[num - 1]newData.plan_time = newData.plan_time.toLocaleString()this.addPlan.strategyTempData.push(JSON.parse(JSON.stringify(newData)))this.addPlan.strategyNum++
},//策略dom内部的 dom 新增
delInteriorDom (firstNum, secondNum) {this.addPlan.strategyTempData[firstNum - 1].redlines_info.entry.splice(secondNum - 1, 1)this.addPlan.strategyTempData[firstNum - 1].entryRedLineNum--
},addInteriorDom (firstNum) {const newData = {key: '',name: '',conditions: [],default_value: '',selectCondition: ''}this.addPlan.strategyTempData[firstNum - 1].redlines_info.entry.push(newData)this.addPlan.strategyTempData[firstNum - 1].entryRedLineNum++
},
