This article provides a detailed account of six custom web widgets created for a client's website and the lessons learned during their development. The widgets include a sticky header that smoothly transitions between light and dark modes, an animated scrolling progress bar, a countdown timer for events with automatic updates, a toast notification system, a reading progress bar that tracks full-page or specific element scroll positions, and a dark/light mode toggle button. Each section highlights the functionality of the widget, the JavaScript techniques used to implement it, and insights gained from the development process.
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