1 JavaScript Knobs
Go beyond standard range sliders with these interactive JavaScript knob controls. The core mechanic involves capturing mouse and touch drag events, then using trigonometry (Math.atan2) to translate pointer coordinates into an angle of rotation. This angle is then mapped to a desired value range and visually updated in real-time with CSS transform: rotate(). These demos showcase how to build these tactile inputs from scratch, offering a highly intuitive and space-efficient alternative for controlling settings like volume, brightness, or any other bounded value.
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CSS Knob Widget with Range Slider
A demonstration of the power of CSS and Sass - the knob is a standard range slider where the thumb is styled as a knob, and its transform: rotate is calculated based on the input’s value via CSS variables updated by JS.
