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三元判断再三元判断
2022-08-02 03:23:00 【Ww597】
1.两个三元判断


2.真机调试 如果手机有下载APP则 跳转APP 若没有则跳转到链接
华为手机 : 在关于本机 版本号连续点击进入开发者人员 进入开发者人员选项 勾选USB选项


3. 用户点击返回上一级页面 跳出弹窗 不让返回上一个页面

4. 用户进入页面和点击按钮提交为作答时间和点击按钮的时候的时间

5.el-table-column的prop拼接字符串
https://blog.csdn.net/u010084270/article/details/107811398

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