Here are some lightweight IDEs for jQuery development with features including syntax highlighting and auto-completion:
Visual Studio Code: A very popular editor, it is lightweight as well, and supports JavaScript along with jQuery. It boasts syntax highlighting, IntelliSense support for auto-completion, debugging facilities, and a vast extension store that helps extend the functionality.
Sublime Text - Fast and simple, providing syntax highlighting and auto-completion, with extensive configuration options and support for custom plugins, especially for JavaScript and jQuery development.
Notepad++ - A fast, light, and free open-source editor mainly for smaller projects. It includes syntax highlighting and auto-completion for all JavaScript and many other languages that make it a great selection for lightweight development.
WebStorm: A little more heavy, WebStorm is an IDE that is optimized for JavaScript. It provides intelligent auto-completion, real-time error checking, and powerful debugging tools. It is ideal if you need additional features for larger projects.
Brackets: Brackets is designed specifically for front-end development. It provides live previews, inline editing, and built-in JavaScript support, making it useful for jQuery projects.
