在React中,当我们试图访问类型为HTMLElement的元素上不存在的属性时,就会发生Property 'X' does not exist on type 'HTMLElement'错误。为了解决该错误,在访问属性之前,使用类型断言来正确地类型声明元素。 这里有三个例子来展示错误是如何发生的。 // App.tsx import {useEffect} from 'react';
如果你想更精确地处理元素的类型,可以使用联合类型将类型声明为HTML***Element | null。 import{useEffect}from'react';exportdefaultfunctionApp() {useEffect(() =>{constinput =document.getElementById('first_name', )asHTMLInputElement|null;console.log(input?.value);constlink =document.getElementById('l...
// App.tsximport{useEffect}from'react';exportdefaultfunctionApp(){useEffect(()=>{constinput=document.getElementById('first_name');// ⛔️ Property 'value' does not exist on type 'HTMLElement'.ts(2339)console.log(input?.value);// ---constlink=document.getElementById('link');// ⛔...
This function is pretty easy to use: Returningtruecauses React to call the render function, returningfalseprevents this. Set the key attribute In React, it is very common to do the following. Find out what's wrong with it: <div>{events.map(event=><Eventevent={event}/>)}</div> ...
importReactfrom'react'; interfaceProps{// 👇️ 使用 JSX.Element 类型comp:JSX.Element; }constWrapper:React.FunctionComponent<Props> =props=>{const{comp:Comp} = props;// 👇️ use as {Comp}return<div>{Comp}</div>; };constApp:React.FunctionComponent=()=>{constHeading=({name}: {nam...
Web组件对H5、常用框架VUE、React的页面支持情况,包括本地和网络端的页面 Web组件如何访问本地的资源文件,并添加查询参数 如何判断Web滑动到了顶部/底部,并且把滑动事件传递给页面 在Web组件的H5页面中,如何使用a标签实现打开各种页面 Web加载的H5页面跳转后,如何避免原有页面注册的资源被清空 Web组件使用raw...
//是否在行尾加分号"useTabs":true,//使用tab(制表符)缩进而非空格"arrowParens":"avoid",//只有一个参数的箭头函数的参数是否带圆括号(默认avoid不带)"jsxSingleQuote":true,//在JSX中使用单引号"htmlWhitespaceSensitivity":"ignore",//为 HTML 文件定义全局空格敏感度"quoteProps":"as-needed"//自定义...
{"__ref":"ModerationData:moderation_data:4007689"},"body@stripHtml({\"truncateLength\":200})":" Hi, We've been trying to use the \"Website\" option in our Team on Teams to add a url of our ticketing system, but when I try to login I get the erro...
I get an error while using normal html tags inside<Menu>: React does not recognize theeventKeyprop on a DOM element... React does not recognize thewarnKeyprop on a DOM element... Easy reproduce <Menu> <div /> </Menu> Funny but when you use React component it doens't have that prob...
Today, I worked on a service request that your customer is facing the following error message: During handling of the above exception, another...