# Range bubble Subtle web animation sketch from [https://mighil.com/animations](https://mighil.com/animations). - **Live demo:** https://mighil.com/animations/range-bubble - **Standalone HTML:** https://mighil.com/animations/range-bubble?download=1 - **This file:** https://mighil.com/animations/range-bubble/range-bubble.md - **Technique:** `control` ## What it does Value only shows while you drag. ## Instructions for AI / coding agents Implement this micro-interaction in the user's stack (vanilla HTML, React, Vue, Svelte, etc.). 1. Use the **HTML** as the DOM structure (adapt JSX/templates as needed; keep class names and ids). 2. Include the **Theme** CSS (or map the same variables into the host design system). It switches light/dark with `prefers-color-scheme`. 3. Apply the **CSS** as-is when possible. It uses `var(--text-color)`, `var(--heading-color)`, `var(--background-color)`, etc. from the theme so both modes work. 4. Run the **JavaScript** after the markup mounts. Prefer `DOMContentLoaded` or a framework `useEffect` / `onMount`. 5. Keep motion respectful of `prefers-reduced-motion` if the snippet already checks it. 6. Do not depend on mighil.com runtime or fonts. Theme variables are enough for color. 7. If porting to a component, expose the interactive root via a ref and preserve accessibility attributes (`aria-*`, `role`, `button` types). ## Theme (auto light / dark) ```css /* Auto light / dark — follows prefers-color-scheme */ :root{ color-scheme: light dark; --text-color: hsl(0, 0%, 18%); --heading-color: hsl(0, 0%, 18%); --background-color: hsl(0, 0%, 99%); --bg-color: hsl(0, 0%, 99%); --link-color: hsl(0, 0%, 18%); --visited-color: hsl(0, 0%, 18%); --blockquote-color: hsl(0, 0%, 18%); --code-bg-color: hsl(0, 0%, 95%); --code-color: hsl(0, 0%, 18%); --sub-color: hsl(0, 0%, 29%); } @media (prefers-color-scheme: dark){ :root{ --text-color: hsl(35, 25%, 85%); --heading-color: hsl(35.2, 32.6%, 82.5%); --background-color: hsl(60, 2.2%, 8.8%); --bg-color: hsl(60, 2.2%, 8.8%); --link-color: hsl(34.7, 55.3%, 79.8%); --visited-color: hsla(34.7, 55.3%, 79.8%, 0.85); --blockquote-color: hsl(35, 30%, 75%); --code-bg-color: hsl(30, 5%, 7.8%); --code-color: limegreen; --sub-color: hsla(34.7, 24.7%, 84.9%, 0.78); } } ``` ## HTML ```html
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``` ## CSS ```css .range-wrap{position:relative;width:min(100%,320px);padding-top:28px;box-sizing:border-box} .range-wrap input[type="range"]{ display:block;width:100%;margin:0;appearance:none;-webkit-appearance:none;height:4px;border-radius:99px;outline:none; background:color-mix(in srgb,var(--text-color) 12%,transparent); } .range-wrap input[type="range"]::-webkit-slider-thumb{ appearance:none;-webkit-appearance:none;width:16px;height:16px;border-radius:50%;cursor:pointer; background:var(--text-color);border:2px solid var(--background-color); box-shadow:0 0 0 1px color-mix(in srgb,var(--text-color) 20%,transparent); } .range-bubble{ position:absolute;top:0;left:0;margin:0; min-width:2.2em;height:22px;padding:0 8px;box-sizing:border-box; display:grid;place-items:center;border-radius:6px; font-size:.75rem;font-variant-numeric:tabular-nums;font-weight:500;line-height:1; background:color-mix(in srgb,var(--text-color) 8%,transparent); transform:translateX(var(--x,0)) translateY(4px); opacity:0;pointer-events:none; transition:opacity .15s ease, transform .15s ease; } .range-wrap.is-active .range-bubble{ opacity:1;transform:translateX(var(--x,0)) translateY(0); } @media (prefers-reduced-motion: reduce){ .grow-link::after,.wipe,.wipe .b,.shuffle .card,.odo-digit > b,.flap-reel,.step-node,.step-line > i, .switch,.switch::after,.copy-btn .c-idle,.copy-btn .c-done,.field label,.tip-bubble,.chip,.like-btn svg, .disc-btn svg,.disc-panel,.snack,.save-btn,.ux-box,.seg-pill,.soft-tabs-ink,.list-actions,.success-banner,.search-clear,.pin-btn svg,.submit-ring rect, .hold-btn .hold-fill,.toast,.menu-btn .menu-line,.stars button,.conn,.retry-btn,.sort-item,.mute-btn .wave,.mute-btn .x-line,.wizard-dots span,.cart-badge,.range-bubble, .filter-list li,.upload-bar > i,.quota-track > i,.quota-tip,.splitbtn-toggle svg,.splitbtn-menu,.presence-dot, .draft-banner,.tag-chip,.empty-state,.empty-item,.deadline,.deadline-clock,.deadline-track > i,.edge-fade-mask,.dirty-bar,.seen-ticks path,.nudge-field,.stack-card, .blur-line,.xface span,.magnet-chip,.confirm-btn,.confirm-btn span,.offline-banner,.sort-flip-btn svg,.sort-flip-list li,.react-fan,.react-fan button,.sticky-cta, .pw-toggle .pw-eye,.pw-toggle .pw-slash,.otp input,.exp-search,.exp-search input,.ok-field input,.ok-field .ok-check,.unread-dot,.unread-check,.unread-row,.sync-label,.sync-btn .sync-arrows,.sync-btn .sync-check, .inline-edit .ie-title,.inline-edit .ie-rename,.inline-edit .ie-panel,.inline-edit .ie-input,.inline-edit .ie-bar, .ghost-wrap .ghost-hint,.ghost-wrap .ghost-key,.cmd-palette,.cmd-palette li,.cmd-stage::before,.crumb-mid,.crumb-more,.diff-add,.diff-add > .diff-add-inner,.slot > i,.zoom-thumb,.zoom-full,.zoom-caption, .bulk-bar,.bulk-check svg,.bulk-row,.env-switch .env-ink,.env-switch button,.invite-btn .invite-idle,.invite-btn .invite-done,.flag-row,.flag-sw,.flag-sw::after,.deploy-node,.deploy-node i,.deploy-wire > b,.ws-ink,.ws-item .ws-check,.thread,.thread-body,.thread-resolve svg, .unfurl-card,.unfurl-thumb,.seat,.form-prog-bar > i,.form-prog-field,.form-prog-field svg,.mention b,.glyph-tile path,.glyph-tile line,.glyph-tile circle{transition:none!important} } ``` ## JavaScript ```js // Range bubble const rangeWrap = document.getElementById('range-wrap'); const rangeInput = document.getElementById('range-input'); const rangeBubble = document.querySelector('.range-bubble'); function syncRange() { if (!rangeInput || !rangeBubble || !rangeWrap) return; const min = Number(rangeInput.min || 0); const max = Number(rangeInput.max || 100); const val = Number(rangeInput.value); const pct = (val - min) / (max - min); rangeBubble.textContent = String(val); const thumb = 16; const track = rangeWrap.clientWidth - thumb; const x = pct * track + thumb / 2 - rangeBubble.offsetWidth / 2; rangeBubble.style.setProperty('--x', Math.max(0, Math.min(rangeWrap.clientWidth - rangeBubble.offsetWidth, x)) + 'px'); } if (rangeInput) { const showRange = () => { if (rangeWrap) rangeWrap.classList.add('is-active'); syncRange(); }; const hideRange = () => { if (rangeWrap) rangeWrap.classList.remove('is-active'); }; rangeInput.addEventListener('pointerdown', showRange); rangeInput.addEventListener('input', showRange); rangeInput.addEventListener('pointerup', hideRange); rangeInput.addEventListener('pointercancel', hideRange); rangeInput.addEventListener('blur', hideRange); window.addEventListener('resize', () => { if (rangeWrap?.classList.contains('is-active')) syncRange(); }); } ``` --- _Source: https://mighil.com/animations/range-bubble_