start error
1. No matching version found for @babel/types@^7.10.1 error
解决：cnpm install
2.Module build faild(from ./mode_modules/sass-loader/dist/cjs.js): TypeError: this.getOptions is not a function
解决：sass-loader版本太高，卸载后下载低版本
3.sock.js
/node_modules/sockjs-client/dist/sockjs.js
解决：注释掉：self.xhr.send(payload);
const utf8Encoder = new TextEncoder(); ^ReferenceError: TextEncoder is not defined
引入mangoose报错
解决：node版本太低，切换高版本的node
other problems
1. Returning to the page after jumping to an external link does not refresh
解决：浏览器问题（谷歌不刷新且没有缓存，手机浏览器部分会刷新，部分会直接展示缓存，与手机的版本以及浏览器的设置有关），改变思路，换了个方案：打开新的窗口（window.open）
2. Vant adds new components to indicate that there are no components in the es package
解决：卸载重新安装
3. The git clone project reported an error: OpenSSL SSL_read: Connection was reset, errno 10054
解决：命令行输入 git config --global http.sslVerify "false"
4. When el-upload uploads a file, if the previous file is still being uploaded, the unuploaded file will be overwritten when it is uploaded again.
之前在调用success方法时，直接将返回结果res加入attachments里
解决：改为在success里遍历fileList,通过判断response的值将fileList遍历塞给attachments.
success(res, file, fileList) {
console.log(res, file, fileList);
if (res.code == SUBMIT_NO) {
this.$message.error(res.message);
return;
} else if (res.code == 401) {
//登录超时
}
this.attachments.splice(0, this.attachments.length);
// 附件中是否有上传中状态
const upLoading = fileList.findIndex(item => {
return item.status !== 'success';
});
fileList.forEach(item => {
if (item.response) {
this.attachments.push(item.response);
} else {
this.attachments.push(item);
}
});
}
5. Vue multi-selection form Cannot read property '_selectionChanged' of undefined"
解决：表格添加属性：lazy: true
6. CORS cross domain request error
解决：html里添加<meta http-equiv="Access-Control-Allow-Origin" content="*" />
7. el-dialog + messagebox superimposes multiple bullet boxes resulting in multiple mask layers. When the outermost bullet box is closed, the mask layer is displayed on the outermost layer
解决：之前的dialog使用的是 :modal-append-to-body="false" 改为 append-to-body
8. The el-form form verification is triggered when entering the page
解决：1.将表单的触发方式由change改为blur，这种方式会导致选择器组件无法及时更新错误提示
2.在mounted里执行clearValitdate()，清除表单校验。
this.$nextTick(() => {
this.$refs['form'].clearValidate();
});
9. border-image and border-radius are not compatible, border-radius invalid
解决：将border-image替换为background-image，内部再套一个div，设置border-radius，内容放在这个div里面。
10. The el-form form in vue3 cannot be entered
解决：el-form中model与ref同名了，改掉即可
11. el-upload uploads avatar error TypeError: xhr.upload.addEventListener is not a function
原因： mockjs拦截了XHR
解决：在node_modules中找到mockjs/dist/mockjs 8308行 mockjs/src/mock/xhr/xhr.js 216行 下添加这段代码 MockXMLHttpRequest.prototype.upload = xhr.upload;然后重启项目
11. toFixed rounding problem (normal in IE, rounding in Chrome)
原因：不同浏览器的原生方法不一致
解决：引入mathjs包，使用mathjs.format(value, precision)
12. watch $route invalid
原因：路由跳转是会销毁当前父组件的，对于新的组件来说，初始化的$route是不会判断其变化的
解决：加上immediate: true， 即立即执行
13. IOS time conversion failed: new Date(“2022-08-04 5:00:00”) returns invalid Date
原因：IOS只能解析“/”分割的日期
解决：new Date("2022-08-04 5:00:00".replace(/-/g, '/'))
14. Amount calculation accuracy loss problem
解决：借助big.js/decimal.js解决
15. element-ui loads internationalization on demand
解决：
按需加载：babel.config.js中添加[
'component',
{
libraryName: 'element-ui',
styleLibraryName: 'theme-chalk'
}
]
创建element-ui.js手动导入所有需要用的组件
main.js中添加
import '@/plugins/element-ui';
//国际化
import eleLocale from 'element-ui/lib/locale';
eleLocale.i18n((key, value) => i18n.t(key, value));
16. The data obtained by getBoundingClientRect() is all 0
原因：在使用该函数获取元素在文档中的位置信息时，需保证元素已经在DOM上渲染才能使用
解决：在nextTick中调用
17. Browser warning: [DOM]Password field is not contained in a form
原因：Make sure that each authentication process (registration, login or change password) is grouped together in a single <form> element. Don’t combine multiple processes (like registration and login), or skip the <form> element.
解决：密码输入框套在<form>标签内