报错 Cannot read properties of undefined(reading‘addEventListener‘)如何解决

简介: 报错 Cannot read properties of undefined(reading‘addEventListener‘)如何解决
我在制作项目中遇到了一个问题,给大家分享一下,如下图:




问题:这是我给一个input输入框绑定的监听事件出现的报错


翻译:无法读取未定义的属性(读取' addEventListener ')


错误原因:js中操作的dom元素的函数方法需要再html文档中渲染完之后再去执行,没有渲染完时dom树是不完整的,所以根本就找不


到监听的元素。(也就是在页面还没加载完的时候这串监听的代码已经执行了)


解决方法


  1. 将addEvementListener放在绑定的元素添加渲染后再执行


  1. 用window.onload或者$(document).ready()


尝试着去解决把!

目录
相关文章
|
3月前
|
存储 JavaScript 前端开发
成功解决:Cannot read properties of undefined (reading ‘commit‘)
这篇文章提供了解决Vuex中"Cannot read properties of undefined (reading 'commit')"错误的两种方法:检查模板中的数据属性是否存在,以及确保在Vue实例中正确挂载了store对象。
成功解决:Cannot read properties of undefined (reading ‘commit‘)
|
3月前
|
定位技术 Apache
Echarts——Invalid geoJson format Cannot read property 'length' of undefined
Echarts——Invalid geoJson format Cannot read property 'length' of undefined
69 0
|
3月前
|
JavaScript
VUE——filemanager-webpack-plugin报错TypeError: Cannot read property 'isFile' of undefined
VUE——filemanager-webpack-plugin报错TypeError: Cannot read property 'isFile' of undefined
57 0
|
5月前
|
前端开发 小程序 JavaScript
微信小程序-Unhandled promise rejection TypeError: Cannot read property ‘get‘ of undefined
微信小程序-Unhandled promise rejection TypeError: Cannot read property ‘get‘ of undefined
|
6月前
|
资源调度 前端开发
编译第三方前端项目时候出现Syntax Error: TypeError: Cannot set properties of undefined (setting ‘parent‘)
编译第三方前端项目时候出现Syntax Error: TypeError: Cannot set properties of undefined (setting ‘parent‘)
450 0
|
3月前
|
前端开发 JavaScript
VUE——Uncaught (in promise) TypeError: Cannot read property '__esModule' of undefined
VUE——Uncaught (in promise) TypeError: Cannot read property '__esModule' of undefined
41 0
TypeError: Cannot set properties of undefined (setting ‘resdata‘),res定义数据出现的问题,定义的方法用this换成that
TypeError: Cannot set properties of undefined (setting ‘resdata‘),res定义数据出现的问题,定义的方法用this换成that
Cannot read properties of undefined (reading ‘row‘)
Cannot read properties of undefined (reading ‘row‘)
Cannot read properties of undefined (reading ‘post‘)
Cannot read properties of undefined (reading ‘post‘)
|
4月前
|
JavaScript
element-ui Cannot read properties of undefined (reading ‘name‘),data中写成集合的形式
element-ui Cannot read properties of undefined (reading ‘name‘),data中写成集合的形式