jshint | 易学教程

JavaScript : Expected and assignment or function call and instead saw an expression

阅读更多关于 JavaScript : Expected and assignment or function call and instead saw an expression

问题 I am using JSHint to ensure my JavaScript is "strict" and I'm getting the following error: Expected an assignment or function call and instead saw an expression On the following code: var str = 'A=B|C=D' var data = {}; var strArr = str.split( '|' ); for (var i = 0; i < strArr.length; i++) { var a = strArr[i].split('='); a[1] && (data[a[0].toLowerCase()] = a[1]); // Warning from JSHint } Any ideas why I'm getting such an error or how I can code to remove the error. 回答1: Here is a simplified

Get warning when passing too few arguments to a javascript function

阅读更多关于 Get warning when passing too few arguments to a javascript function

问题 Is there a tool that can help me detect when a javascript function is being passed too few arguments? As far as I can tell, neither JSLint nor JSHint provides this feature. Just be make it clear, if I write: some_method = function(x,y) { // ..do stuff } some_method(2); I would like to be warned, that I might have to pass in another argument. 回答1: You can't do that, all parameters are always optional and you can pass an indefinite amount of parameters to a parameterless function (through the

Javascript ENUM pattern naming convention

阅读更多关于 Javascript ENUM pattern naming convention

问题 I am working on a javascript project which requires use of javascript "Enums" meaning Objects like: var WinnerEnum = { Player1: 1, Player2: 2, Draw: 0 }; This is working great for me, however, I have no idea what is the proper way (according to convention) to name the Enum because as far as I know only class names start with a capital letter (indicating the ability to call a constructor on). JSHint also outputs the following warning: Missing 'new' prefix when invoking a constructor. If there

ESlint: Turning off a specific rule across a project

阅读更多关于 ESlint: Turning off a specific rule across a project

问题 I've read the docs on how to disable rules from within a file, however I'm wondering if there is a way to disable or overwrite rules from .eslintrc without overwriting other previous rules & presets I defined. I'm working in an AngularJS project so I used extends property inside my .eslintrc file. There are 3 specific rules from the angular ESlint plugin that I would like to disable, without disabling everything else I was using previously. Without the rules property all of my linting rules

Expected an identifier and instead saw '>'

阅读更多关于 Expected an identifier and instead saw '>'

问题 ReactDOM.render(<App />, document.getElementById('root')); Please let me know why VSCode [jshint] showed that issue? And please also let me know how to add some code inside .jshintrc 回答1: JSHint does not support linting of jsx . If you want to develop react applications using jsx you should disable it or better switch to ESLint. For Visual Studio Code there is a plugin that you can install. 回答2: Press ⇧⌘X and then write there jshint and uninstall it. After that write eslint and install it if

Expected an identifier and instead saw '>'

阅读更多关于 Expected an identifier and instead saw '>'

前端科普系列（5）：ESLint

阅读更多关于前端科普系列（5）：ESLint

作者：Morrain 【前端科普系列】帮助阅读者了解web前端，主要覆盖web前端的基础知识，但不深入讲解，定位为大而全并非细而精，适合非前端开发的同学对前端有一个系统的认识，能更好的与前端开发协作。尽可能的写成科普类文章，对于前端开发而言，只适合刚入门的新手。本文为第五章，主要讲前端工程化中的很重要工具 ESLint，主要介绍 ESLint 的历史、用法以及如何基于ESLint 打造保护代码仓库优雅的护城河。一、前言战国时期强大的赵国想要一举攻打并吞并北边的燕国，而小国“梁城”位居两国之间，为战略要冲，是必取之地。于是赵国派遣大将巷淹中，率领十万大军攻打仅有四千人的“梁城”，梁城王向以守城著称的墨家求救。但梁城等到的却是一个其貌不扬、孤身应战的墨家侠客革离，谁料革离足智多谋，指挥梁城四千军民抵御十万赵军，功成身退。（图片来源：网络） “梁城”就好比我们的项目仓库，“梁城”的秩序取决于“革离”有没有守好它！那我们的项目仓库呢？你愿意看到城中杂乱无章、毫无规则、乱象丛生还是愿意看到城中秩序井然、风格统一、整齐有序？如何成为程序员里的“革离”，守好属于我们的天空之城？二、关于 ESLint 1、ESLint 是什么先来看下它在官网上的定义： Find and fix problems in your JavaScript code 没错就一句话，发现并修复你

jslint warning “Don't make functions within a loop” only for functions referencing outside variables?

阅读更多关于 jslint warning “Don't make functions within a loop” only for functions referencing outside variables?

来源： https://stackoverflow.com/questions/40224036/jslint-warning-dont-make-functions-within-a-loop-only-for-functions-referenci

关闭特定行的eslint规则

阅读更多关于关闭特定行的eslint规则

问题： In order to turn off linting rule for a particular line in JSHint we use the following rule: 为了关闭JSHint中特定行的linting规则，我们使用以下规则： /* jshint ignore:start*/ $scope.someVar = ConstructorFunction(); /* jshint ignore:end */ I have been trying to locate the equivalent of the above for eslint. 我一直试图找到相当于以上的eslint。解决方案：参考一： https://stackoom.com/question/1sMPh/关闭特定行的eslint规则参考二： https://oldbug.net/q/1sMPh/Turning-off-eslint-rule-for-a-specific-line 来源： oschina 链接： https://my.oschina.net/u/4438370/blog/4493919

快速发现bug ，用起来非常爽的七个神仙调试工具

阅读更多关于快速发现bug ，用起来非常爽的七个神仙调试工具

接下来就好好介绍一下这七个开发调试工具，用起来是真的爽啊。建议收藏使用哦！ Web浏览器中的开发工具任何现代的 Web 浏览器都配有功能强大的工具来调试应用程序。如使用控制台语句 cconsole.log() ，使用 alert() 的弹出窗口，还可以使用 debugger 语句暂停代码执行，这些对于我们的调试都很有帮助。我们还可以使用网络检查器或CSS样式检查器让调试变得更轻松流畅。任何现代网络浏览器都配备了强大的工具来帮助调试您的应用程序。它可以简单到使用console.log()的控制台语句，使用alert()的弹出窗口，甚至使用调试器语句暂停代码执行。这些工具对我们的调试任务非常有帮助，尤其是调试器语句。 Postman 地址： www.postman.com/ 几乎所有前端应用程序都发送和接收JSON响应和请求。应用程序通过请求 API 可以做很多事情，例如身份验证，用户数据传输，甚至是一些简单的事情，例如获取所在位置的当前天气。 Postman 是调试接口的最佳工具之一。它适用于 MacOS ， Windows 和 Linux 的系统，可以快速轻松地直接发送 REST ， SOAP 和 GraphQL 请求。使用 Postman，我们可以调整请求，分析响应和调试问题。当不确定问题出在前端还是后端时，这是很有帮助的。 CSS Lint 地址：