截图如下: 原因如下:记住"./uploads" 后要加一个/ fs.stat("./uploads/" + files[i], function(err, stats) { 解决: var fs = require("fs"); exports.getAllAlbums = function(callback) { // 找到所有文件夹 fs.readdir("./uploads", function(err,files)…

Node中使用MySQL报错: TypeError: Cannot read property 'query' of undefined at /Users/sipeng/Desktop/彭思/2017年学习/Node/sampleEjs/sampleEjs/models/user.js:: at Handshake.onConnect [:) at Handshake.Sequence.end (/Users/sipeng/Desktop/彭思/2017年学习/Node/sampleEjs/s…

正常情况下在data里面都有做了定义 在函数里面进行赋值 这时候你运行时会发现,数据可以请求到,但是会报错 TypeError: Cannot set property 'listgroup' of undefined 主要原因是: 在 then的内部不能使用Vue的实例化的this, 因为在内部 this 没有被绑定.可以看下 Stackoverflow 的解释: 解决办法: 1.用ES6箭头函数,箭头方法可以和父方法共享变量 2.在请求axios外面定义一下 var that=this 问题…

在做图片上传功能的时候,遇到了JS无法识别图片type的问题,在使用过程中是没有问题的,但是不知道为什么浏览器的Console报这个错误: Uncaught TypeError: Cannot read property 'type' of undefined at Function.$.ImgSrc (ModelUpload.do:18) at uploadImg (ModelUpload.do:77) at HTMLInputElement.onchange (ModelUpload.do:…

我只安装了webpack,没有安装webpack-cli,第一次输入webpack打包时,提示 One CLI for webpack must be installed. These are recommended choices, delivered as separate packages: - webpack-cli (https://github.com/webpack/webpack-cli) The original webpack full-featured CLI. We wi…

TypeError: Cannot read property 'validate' of undefined at VueComponent.submitForm (plat_users.html:385) at Proxy.boundFn (vue.js:130) at click (eval at makeFunction (vue.js:8480), <anonymous>:2:5611) at VueComponent.invoker (vue.js:1948) at VueComp…

错误信息如下所示: isURLSameOrigin.js?3934:57 Uncaught (in promise) TypeError: Cannot read property 'protocol' of undefined at isURLSameOrigin (isURLSameOrigin.js?3934:57) at dispatchXhrRequest (xhr.js?b50d:103) at new Promise (<anonymous>) at xhrAdapter (xh…

报错截图: 这个错误就是路由上的component写成了components…

代码如下: class test extends Component { constructor(props) { super(props); this.state = { liked: false }; } handleClick(event) { this.setState({liked: !this.state.liked}); } render() { var text = this.state.liked ? '喜欢' : '不喜欢'; return ( <div onClick={t…

转自:https://blog.csdn.net/fd214333890/article/details/53467429…