Cannot read property ‘catch‘ of undefined_终不似、少年游的博客 … After authentication, I want to So I tried to learn how to do this on my own by taking two video courses about node and cheerio on udemy but I haven’t gotten any better at it. Vue：未捕获（承诺中）TypeError：无法读取未定义的属性'_c'(Vue:Uncaught(inpromise)TypeError:Cannotreadproperty'_c'ofundefined),我需要将项目从vue2升级到vue3我正在使用coreui模板。并且我升级了vue、vue Cannot read property 打开 vue.config.js 如果是两层表达式a.b则不会报错，返回的是undefined。. Uncaught TypeError: Cannot read property 'msie' of undefined - jQuery tools. I have a line of code that is breaking my website, I don't see anything wrong with the code, but i keep getting a TypeError cannot read 'firstName' of undefined. log (obj. 2. 2022-03-24 21:02. b) later appended .catch() to the original... is this because of this doesn't detect in the addDepartment it can not understand that this is the CustomToolbar component? I am passing a data from front end to back end using the below function. 如果是两层表达式a.b则不会报错，返回的是undefined。. – traktor. 这是在微信小程序中 使用上拉加载更多 时候出现的问题 发现是未定义节流阀导致多次发起请求页面数据 解决：在data中定义了一个节流阀，在获取数据的时候打开 在获取到数据后关闭节流阀 在上拉加载的methods方法中判断节流阀是否打开，如果打开则直接return出去，未打开就可以继续请求数据啦！ TypeError: Cannot read property 'catch' of undefined Please be sure to answer the question.Provide details and share your research! Unhandled Rejection (TypeError): Cannot read property 'catch' of undefined. push 方法一般都 vue-router 引起的。 解决. TypeError TypeError