x=10 vs let x=10

• prettier

  153 45,169 9.6 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

  143 22,438 9.8 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

  Extensible JavaScript Form Builder Libraries. SurveyJS is a set of four fully customizable JS libraries that allow you to create, easily modify, and run multiple web forms in any web app, while retaining all sensitive data on your own servers.

  

• Visual Studio Code

  1,082 144,131 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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