Bootstrap 5 Animated Donut Charts with Legend
Three animated donut charts for answered questions, each with a centred total and a legend of values and percentages that highlights the matching slice on hover or focus.
<section class="wdw-stage">
<div class="container" style="max-width:1080px">
<div class="mb-4 mb-lg-5 text-center">
<span class="wdw-eyebrow">Analytics</span>
<h1 class="wdw-heading h2 mt-1 mb-0">Answered questions</h1>
</div>
<div class="row g-4 row-cols-1 row-cols-md-3">
<div class="col">
<figure class="wdw-card h-100 p-4 mb-0 dn-chart d-flex flex-column">
<figcaption class="mb-3"><span class="wdw-eyebrow">Skill types</span><h2 class="h5 fw-bold mb-0">Micro-skills</h2></figcaption>
<div class="dn-wrap mx-auto mb-3">
<svg class="dn-svg" viewBox="0 0 120 120" role="img" aria-label="Micro-skills donut chart: Additive 642 (64%), Multiplicative 358 (36%)"><circle class="dn-track" cx="60" cy="60" r="46" fill="none" stroke-width="16"/></svg>
<div class="dn-center"><div class="fs-3 fw-bold text-body-emphasis lh-1">1,000</div><div class="small text-body-secondary">answered</div></div>
</div>
<p class="dn-stat text-body-secondary text-center mb-3">Top answer: <strong class="text-body-emphasis">Additive</strong> at 64%</p>
<ul class="list-unstyled mb-0 dn-legend" aria-label="Breakdown"><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="642" data-i="0"><span class="dn-sw dn-c0" aria-hidden="true"></span><span class="flex-grow-1">Additive</span><span class="text-body-secondary small">64%</span><strong class="dn-val">642</strong></li><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="358" data-i="1"><span class="dn-sw dn-c1" aria-hidden="true"></span><span class="flex-grow-1">Multiplicative</span><span class="text-body-secondary small">36%</span><strong class="dn-val">358</strong></li></ul>
</figure>
</div>
<div class="col">
<figure class="wdw-card h-100 p-4 mb-0 dn-chart d-flex flex-column">
<figcaption class="mb-3"><span class="wdw-eyebrow">Layouts</span><h2 class="h5 fw-bold mb-0">Categories</h2></figcaption>
<div class="dn-wrap mx-auto mb-3">
<svg class="dn-svg" viewBox="0 0 120 120" role="img" aria-label="Categories donut chart: Horizontal 768 (77%), Vertical 232 (23%)"><circle class="dn-track" cx="60" cy="60" r="46" fill="none" stroke-width="16"/></svg>
<div class="dn-center"><div class="fs-3 fw-bold text-body-emphasis lh-1">1,000</div><div class="small text-body-secondary">answered</div></div>
</div>
<p class="dn-stat text-body-secondary text-center mb-3">Top answer: <strong class="text-body-emphasis">Horizontal</strong> at 77%</p>
<ul class="list-unstyled mb-0 dn-legend" aria-label="Breakdown"><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="768" data-i="0"><span class="dn-sw dn-c0" aria-hidden="true"></span><span class="flex-grow-1">Horizontal</span><span class="text-body-secondary small">77%</span><strong class="dn-val">768</strong></li><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="232" data-i="1"><span class="dn-sw dn-c1" aria-hidden="true"></span><span class="flex-grow-1">Vertical</span><span class="text-body-secondary small">23%</span><strong class="dn-val">232</strong></li></ul>
</figure>
</div>
<div class="col">
<figure class="wdw-card h-100 p-4 mb-0 dn-chart d-flex flex-column">
<figcaption class="mb-3"><span class="wdw-eyebrow">Maths</span><h2 class="h5 fw-bold mb-0">Operations</h2></figcaption>
<div class="dn-wrap mx-auto mb-3">
<svg class="dn-svg" viewBox="0 0 120 120" role="img" aria-label="Operations donut chart: Addition 486 (49%), Subtraction 156 (16%), Multiplication 215 (22%), Division 143 (14%)"><circle class="dn-track" cx="60" cy="60" r="46" fill="none" stroke-width="16"/></svg>
<div class="dn-center"><div class="fs-3 fw-bold text-body-emphasis lh-1">1,000</div><div class="small text-body-secondary">answered</div></div>
</div>
<p class="dn-stat text-body-secondary text-center mb-3">Top answer: <strong class="text-body-emphasis">Addition</strong> at 49%</p>
<ul class="list-unstyled mb-0 dn-legend" aria-label="Breakdown"><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="486" data-i="0"><span class="dn-sw dn-c0" aria-hidden="true"></span><span class="flex-grow-1">Addition</span><span class="text-body-secondary small">49%</span><strong class="dn-val">486</strong></li><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="156" data-i="1"><span class="dn-sw dn-c1" aria-hidden="true"></span><span class="flex-grow-1">Subtraction</span><span class="text-body-secondary small">16%</span><strong class="dn-val">156</strong></li><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="215" data-i="2"><span class="dn-sw dn-c2" aria-hidden="true"></span><span class="flex-grow-1">Multiplication</span><span class="text-body-secondary small">22%</span><strong class="dn-val">215</strong></li><li class="dn-item d-flex align-items-center gap-2 py-2" data-value="143" data-i="3"><span class="dn-sw dn-c3" aria-hidden="true"></span><span class="flex-grow-1">Division</span><span class="text-body-secondary small">14%</span><strong class="dn-val">143</strong></li></ul>
</figure>
</div>
</div>
</div>
</section>
/* Web Designer Wall library style — shared base for every Bootstrap 5 snippet.
Indigo accent, Plus Jakarta Sans, soft cards, pill buttons. Works in light and dark. */
@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");
:root,
[data-bs-theme="light"] {
--wdw-font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
--bs-body-font-family: var(--wdw-font);
--bs-primary: #4f46e5;
--bs-primary-rgb: 79, 70, 229;
--bs-primary-text-emphasis: #3730a3;
--bs-primary-bg-subtle: #eef2ff;
--bs-primary-border-subtle: #c7d2fe;
--bs-link-color: #4f46e5;
--bs-link-color-rgb: 79, 70, 229;
--bs-link-hover-color: #4338ca;
--bs-link-hover-color-rgb: 67, 56, 202;
--bs-focus-ring-color: rgba(79, 70, 229, 0.25);
--bs-border-radius: 0.75rem;
--bs-border-radius-lg: 1rem;
--bs-border-radius-xl: 1.25rem;
--wdw-radius-card: 1.25rem;
--wdw-shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 16px 40px -16px rgba(16, 24, 40, 0.22);
--wdw-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 12px -4px rgba(16, 24, 40, 0.12);
--wdw-stage: #f5f6fb;
}
[data-bs-theme="dark"] {
--bs-primary: #818cf8;
--bs-primary-rgb: 129, 140, 248;
--bs-primary-text-emphasis: #c7d2fe;
--bs-primary-bg-subtle: rgba(129, 140, 248, 0.14);
--bs-primary-border-subtle: rgba(129, 140, 248, 0.35);
--bs-link-color: #a5b4fc;
--bs-link-color-rgb: 165, 180, 252;
--bs-link-hover-color: #c7d2fe;
--bs-link-hover-color-rgb: 199, 210, 254;
--bs-focus-ring-color: rgba(129, 140, 248, 0.35);
--wdw-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 40px -16px rgba(0, 0, 0, 0.7);
--wdw-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px -4px rgba(0, 0, 0, 0.5);
--wdw-stage: #0f1117;
}
body { font-family: var(--wdw-font); -webkit-font-smoothing: antialiased; }
/* Bootstrap compiles its blue into these components; point them at the accent. */
.btn-primary {
--bs-btn-bg: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
--bs-btn-hover-bg: #4338ca; --bs-btn-hover-border-color: #4338ca;
--bs-btn-active-bg: #3730a3; --bs-btn-active-border-color: #3730a3;
--bs-btn-disabled-bg: var(--bs-primary); --bs-btn-disabled-border-color: var(--bs-primary);
--bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
[data-bs-theme="dark"] .btn-primary { --bs-btn-color: #0f1117; --bs-btn-hover-bg: #a5b4fc; --bs-btn-hover-border-color: #a5b4fc; --bs-btn-hover-color: #0f1117; --bs-btn-active-color: #0f1117; }
.btn-outline-primary {
--bs-btn-color: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
--bs-btn-hover-bg: var(--bs-primary); --bs-btn-hover-border-color: var(--bs-primary);
--bs-btn-active-bg: var(--bs-primary); --bs-btn-active-border-color: var(--bs-primary);
--bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
.btn { --bs-btn-font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; }
.btn-sm { min-height: 36px; }
.form-control, .form-select { min-height: 44px; border-radius: .75rem; }
.form-control:focus, .form-select:focus, .form-check-input:focus { border-color: rgba(var(--bs-primary-rgb), .6); box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.form-check-input:checked { background-color: var(--bs-primary); border-color: var(--bs-primary); }
.nav-pills { --bs-nav-pills-link-active-bg: var(--bs-primary); }
.nav { --bs-nav-link-color: var(--bs-secondary-color); --bs-nav-link-hover-color: var(--bs-emphasis-color); }
.pagination { --bs-pagination-active-bg: var(--bs-primary); --bs-pagination-active-border-color: var(--bs-primary); --bs-pagination-color: var(--bs-body-color); --bs-pagination-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.progress, .progress-stacked { --bs-progress-bar-bg: var(--bs-primary); }
.list-group { --bs-list-group-active-bg: var(--bs-primary); --bs-list-group-active-border-color: var(--bs-primary); }
.dropdown-menu { --bs-dropdown-link-active-bg: var(--bs-primary); border-radius: .875rem; box-shadow: var(--wdw-shadow-sm); }
.accordion { --bs-accordion-active-bg: var(--bs-primary-bg-subtle); --bs-accordion-active-color: var(--bs-primary-text-emphasis); --bs-accordion-btn-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.badge { font-weight: 600; }
/* Library building blocks — use these instead of re-inventing them per snippet. */
.wdw-stage { min-height: 100vh; display: flex; align-items: center; background: var(--wdw-stage); padding-block: 3rem; }
.wdw-card { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: var(--wdw-radius-card); box-shadow: var(--wdw-shadow); }
.wdw-card-sm { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: 1rem; box-shadow: var(--wdw-shadow-sm); }
.wdw-aurora { position: relative; color: #fff; background: radial-gradient(60% 55% at 100% 0, #818cf8 0, transparent 70%), radial-gradient(65% 60% at 0 100%, #ec4899 0, transparent 65%), #1e1b4b; }
.wdw-eyebrow { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--bs-primary); }
.wdw-heading { font-weight: 800; letter-spacing: -.02em; color: var(--bs-emphasis-color); }
.wdw-muted { color: var(--bs-secondary-color); }
.wdw-icon { width: 2.75rem; height: 2.75rem; flex: none; display: inline-flex; align-items: center; justify-content: center; border-radius: .875rem; background: var(--bs-primary-bg-subtle); color: var(--bs-primary); }
/* Component */
/* ramp derived from the library accent; every step keeps >= 3:1 against the card */
:root { --dn-0: var(--bs-primary); --dn-1: color-mix(in srgb, var(--bs-primary) 84%, var(--bs-body-bg)); --dn-2: color-mix(in srgb, var(--bs-primary) 72%, var(--bs-body-bg)); --dn-3: color-mix(in srgb, var(--bs-primary) 62%, var(--bs-body-bg)); }
[data-bs-theme="dark"] { --dn-1: color-mix(in srgb, var(--bs-primary) 80%, var(--bs-body-bg)); --dn-2: color-mix(in srgb, var(--bs-primary) 66%, var(--bs-body-bg)); --dn-3: color-mix(in srgb, var(--bs-primary) 54%, var(--bs-body-bg)); }
.dn-wrap { position: relative; width: 11rem; max-width: 100%; aspect-ratio: 1; }
.dn-svg { width: 100%; height: 100%; transform: rotate(-90deg); overflow: visible; }
.dn-track { stroke: var(--bs-tertiary-bg); }
.dn-seg { fill: none; stroke-width: 16; transition: stroke-dasharray 1s cubic-bezier(.2,.8,.2,1), opacity .2s, stroke-width .2s; }
.dn-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.dn-sw { width: .75rem; height: .75rem; border-radius: 4px; flex: none; }
.dn-c0 { background: var(--dn-0); } .dn-c1 { background: var(--dn-1); } .dn-c2 { background: var(--dn-2); } .dn-c3 { background: var(--dn-3); }
.dn-seg.c0 { stroke: var(--dn-0); } .dn-seg.c1 { stroke: var(--dn-1); } .dn-seg.c2 { stroke: var(--dn-2); } .dn-seg.c3 { stroke: var(--dn-3); }
.dn-item { border-top: 1px solid var(--bs-border-color-translucent); cursor: default; }
.dn-item:first-child { border-top: 0; }
.dn-item:focus-visible { outline: 2px solid var(--bs-primary); outline-offset: 2px; }
.dn-chart.is-dim .dn-seg { opacity: .35; }
.dn-chart.is-dim .dn-seg.is-on { opacity: 1; stroke-width: 19; }
@media (prefers-reduced-motion: reduce) { .dn-seg { transition: none; } }
.dn-item.dn-top { margin-top: auto; }
.dn-chart .dn-stat { margin-top: auto; }
.dn-stat { font-size: .8125rem; }
.dn-chart .dn-wrap { margin-top: auto; }
(function () {
var NS = 'http://www.w3.org/2000/svg';
var R = 46, C = 2 * Math.PI * R, GAP = 2;
function buildDonut(chart) {
var svg = chart.querySelector('.dn-svg');
var items = chart.querySelectorAll('.dn-item');
if (!svg || !items.length) return;
var total = 0;
items.forEach(function (li) { total += Number(li.dataset.value) || 0; });
if (!total) return;
var offset = 0, segs = [];
items.forEach(function (li, i) {
var len = (Number(li.dataset.value) / total) * C;
var c = document.createElementNS(NS, 'circle');
c.setAttribute('class', 'dn-seg c' + (i % 4));
c.setAttribute('cx', 60); c.setAttribute('cy', 60); c.setAttribute('r', R);
c.style.strokeDashoffset = -offset;
c.style.strokeDasharray = '0 ' + C;
c.dataset.target = Math.max(len - GAP, 0.5) + ' ' + C;
svg.appendChild(c);
segs.push(c);
offset += len;
function on() { chart.classList.add('is-dim'); c.classList.add('is-on'); }
function off() { chart.classList.remove('is-dim'); c.classList.remove('is-on'); }
li.addEventListener('mouseenter', on); li.addEventListener('mouseleave', off);
li.addEventListener('focus', on); li.addEventListener('blur', off);
});
function grow() { segs.forEach(function (c) { c.style.strokeDasharray = c.dataset.target; }); }
var reduce = window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
if (reduce || window.innerWidth < 768 || !('IntersectionObserver' in window)) { grow(); }
else {
var io = new IntersectionObserver(function (entries) {
if (entries[0].isIntersecting) { grow(); io.disconnect(); }
}, { threshold: 0.1 });
io.observe(chart);
}
}
function initDonuts() {
document.querySelectorAll('.dn-chart').forEach(buildDonut);
}
initDonuts();
})();
Built on Bootstrap 5.3.8 with plain JavaScript — no jQuery. Supports light and dark mode via data-bs-theme.
