element 上传组件Uncaught TypeError: Cannot set property ‘status‘ of undefined 的原因和解决办法 查看控制台报错 断点调试 在这里调试我们发现,file为undefined。我们进到getFile函数看到,this.uploadFiles方法的值为空,不能够进入到下面的every循环,而this.uploadFiles的值来自于父组件的fileList,所以我们就把错误定义...
断点调试 在这里调试我们发现,file为undefined。我们进到getFile函数看到,this.uploadFiles方法的值为空,不能够进入到下面的every循环,而this.uploadFiles的值来自于父组件的fileList,所以我们就把错误定义到父组件中的fileList传值问题上。 1.可能是在el-upload钩子函数uploadChange做了文...
报错原因:设置了:file-list="fileList",filelist为只读,修改后就会报错 Cannot set property 'status' of undefined 解决方法:在成功回调中用setTimeout清空上传列表即可解决。 代码如下 <el-uploadstyle="margin:10px 0 0 0;width:90%"class="upload-demo"ref="upload":on-success="success":action='url"':...
Cannot set property setState of undefined Why is there an error? Text is part of the class state yet when changing it apparently it doesn't even exist. The error appears when you type in the input field Am I even doing this thing right? Will this make a todo list?! I can't even ...
/Users/jacky.tan/projects/provider-bindings-sdk/packages/cwi-binding-tests/node_modules/mocha/lib/runner.js:687 test.state = STATE_PASSED; ^ TypeError: Cannot set property 'state' of undefined at /Users/jacky.tan/projects/provider-bindings-sdk/packages/cwi-binding-tests/node_modules/mocha/lib/...
Asked2 years, 11 months ago Modified2 years, 11 months ago Viewed2k times 0 Reference snapshot of error -->>Cannot set property 'styles' of undefined, error in nextJs whenever I installs package or simply doingnpm iI face this issue, I have tried ...
TypeError: Cannot set property 'xxxx' of undefined 的报错解决办法,应该有很多人遇到和我一样的问题,然后我就直接说解决办法了首先是因为在用foreach取值的时候赋值方法用错了,我开始是这样写的,然后就是一直报错正确的写法应该是这样的,需要使用es6的新语法去是实现这
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 created(){axios.get('http://localhost:3001/todos').then((res)=>{this.todos=res.data}).catch((error)=>{console.log(error)})} 2、在请求axios外面定义一下 var that=this created(){varthat=thisaxios.get('http://localhost:3001/todos...
When I add the following snippet for attaching an upgrade listener for the connection, I encounter the following error message. I could narrow down the error to the upgrade request.TypeError: Cannot set property 'readyState' of undefined at Socket.socketOnClose (<apppath>\node_modules\ws\lib\...
this.state = { liked: false }; } 改为 constructor(props) { super(props); this.state = { liked: false }; this.handleClick = this.handleClick.bind(this);//手动绑定 } 第二种解决办法是:将 handleClick(event) { this.setState({liked: !this.state.liked}); ...