I Rebuilt Instagram Stories' Segmented Progress Bars

Short summary

A DEV Community tutorial walks through rebuilding Instagram Stories' segmented progress bars using vanilla JavaScript and CSS. The implementation uses a single requestAnimationFrame loop tracking elapsed time to animate the active segment (0→100% width), with segments before marked full and after empty. The UI supports tap navigation, hold-to-pause, and auto-progression—all driven by a simple timer that makes pause/resume and skip logic trivial compared to pure CSS animations.

• •Vanilla JS rebuild of Instagram's segmented progress bars using requestAnimationFrame timer
• •Active segment animates 0→100% width; tap halves skip stories, pointerdown/up pause/resume
• •Timer-driven approach makes interruption and seeking easier than pure CSS animations

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