x=10 vs let x=10

• prettier

  439 48,241 9.8 JavaScript

  Prettier is an opinionated code formatter.

  

Professional: also set up Prettier, its IDE extension, and use VS Code's "Format on save" feature (or whatever other IDE's equivalent) to quickly and easily format your code to a consistent standard that you define in the configuration for ESLint and Prettier.

• ESLint

  379 24,231 9.7 JavaScript

  Find and fix problems in your JavaScript code.

  

Best: set up an IDE (Visual Studio Code is free and an industry standard) and configure ESLint and the ESLint extension for your IDE so that you can catch errors like this before even running your script.

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• Visual Studio Code

  2,838 158,095 10.0 TypeScript

  Visual Studio Code

  

Best: set up an IDE (Visual Studio Code is free and an industry standard) and configure ESLint and the ESLint extension for your IDE so that you can catch errors like this before even running your script.

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