qq_46100747的博客

vue项目中经常会遇到"cannot read property ‘某某某’ of undefined"的报错信息。下面我就简单分析下报错原因及解决方法问题描述info是服务端返回的数据，是一个对象。我们要做的就是把对象里的值放到页面显示，先看一下我出错的代码片段<div class="shop-header-discounts" @click="toggleSupportShow"> <div class="discounts-left"> <div

vue不推荐直接在子组件中修改父组件传来的props的值，会报错[Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "editSingupDat

<el-menu :default-active="$route.path" unique-opened :collapse-transition="false" router background-color="#333744" text-color="#fff" active-text-color="#ffd04b"> <el-menu-item :index="

ellintrc.js 文件详解`解决参考

// 这个错误，翻译过来后很好理解，需要得到的数组，却得到了一个对象。顾名思义，数据类型错误。//根据此处错误信息提示的位置上的数据，将其类型该成数组就可以解决这个问题了。props: { value: { type: Boolean, default: false }, editData: { type: Array, default () { return [] } } },Dial.

MongoError: Cannot use a session that has ended at applySession (E:\node_demo\demo17\node_modules\mongodb\lib\core\sessions.js:695:12) at _command (E:\node_demo\demo17\node_modules\mongodb\lib\core\wireprotocol\command.js:58:17) at command (E:\