[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
问题的形成原因：
1.在el-table中添加 type=“expand” 二级列表
2.二级列表数据是由 @expand-change=" " 事件 请求api获取
3.把获取的数据动态添加到一级列表的数据中
4.导致数据结构 深层次 嵌套 vue数据没有及时回显
* 详解
我们知道在vue中，数据的绑定都不用我们操心，例如在data中有一个msg的变量，你修改它，那么在页面上，msg的内容就会自动发生变化。但是如果对于一个复杂的对象，例如一个对象数组，你直接去给数组上某一个元素增加属性，或者直接把数组的length变成0，vue就无法知道发生了改变。
// 一级列表 渲染数据是数组 array // 二级列表 渲染数据是根据一级数据的当前列表的id请求api获取的 数据结构也是数组
arrayChildren // 将获取到的arrayChildren 根据id判断 动态添加到 相应的一级列表中 //
例如一个对象数组，你直接去给数组上某一个元素增加属性，或者直接把数组的length变成0，vue就无法知道发生了改变。 。。。 // v-if=
“update ” 配合 this.$nextTick(() => {} 强制刷新dom结构 <el-table v-if= 'update '>
</el-table > 二级列表 this.array.forEach((item, key) => { if (item.id == row.id) {
this.array[key].arrayChildren1 = arrayChildren1 this.array[key].arrayChildren2 =
arrayChildren2} }) this.update = false this.$nextTick(() => { this.update =
true })
