原因:video.js 在获取页面元素时使用的是querySelector方法,由于querySelector是按css规范来实现的,所以它传入的字符串中第一个字符不能是数字。 解决:元素Id在赋值时,第一个字符注意不是数字就可以了。 分享点滴知识,每天进步一点点。
el-table导致TypeError: this.$el.querySelectorAll is not a function 在使用Vue的过程中报以下错误,特此记录 报错截图 vue.runtime.esm.js?2b0e:1888 TypeError: data.reduce is not a function at Proxy.render (table.js?ad41:2558) at VueComponent.Vue._render (vue.runtime.esm.js?2b0e:3548) at V...
AI代码解释 You can define and mount a middlewarefunctionlocally.app.use(function(req,res,next){next()})Arouter is valid middleware.varrouter=express.Router()router.get('/',function(req,res,next){next()})app.use(router)An Express app is valid middleware.varsubApp=express()subApp.get('/'...
正常展示,但是换成DOM元素 defaults.scrollElement=document.getElementById('scroll');defaults.articleElement=document.getElementById('content'); 报错: outline.js:57 Uncaught DOMException: Failed to execute 'querySelector' on 'Document': '[object HTMLDivElement]' is not a valid selector. at st.ren...
Selectors are efficient. A selector is not recomputed unless one of its arguments changes. Selectors are composable. They can be used as input to other selectors. TheRedux docs usage page onDeriving Data with Selectorscovers the purpose and motivation for selectors, why memoized selectors are us...
Don't assume that observingdocument.body, instead oftarget.parentNode, is a better target. Observingdocument.bodyhas performance implications because callback logic is executed forallDOM updates, whether or not they have anything to do with your element. Use either of the following approaches: ...
A simple markdown editor with preview, implemented with React.js and TypeScript. This React Component aims to provide a simple Markdown editor with syntax highlighting support. This is based ontextareaencapsulation, so it does not depend on any modern code editors such as Acs, CodeMirror, Monac...
keydown: This setting enables or disables navigation via keyboard input. childSelector(Deprecated after version 1.0): (defaultdata-anchor)[Deprecated](There's no longer a requirement to add the data-anchor attribute to child elements.) This property is a CSS3 selector string used by the Panora...
functiongetKey(k){return`a key named${k}`; }// badconstobj = {id:5,name:'San Francisco', }; obj[getKey('enabled')] =true;// goodconstobj = {id:5,name:'San Francisco', [getKey('enabled')]:true, }; 3.3使用对象方法的缩写。 eslint:object-shorthand ...
First, ensure that your project is configured with ESLint. If it is not, please follow theESLint instructionsto set it up. To installeslint-plugin-sonarjs, use the followingnpmcommand (oryarnequivalent): npm install eslint-plugin-sonarjs --save-dev#locallynpm install eslint-plugin-sonarjs...