Bootstrap 5 Product Filter Sidebar with Accordion
A product filter sidebar with collapsible groups, checkbox options with counts, live result tally and a clear-all action.
<section class="wdw-stage">
<div class="container" style="max-width: 420px">
<form class="wdw-card p-4" id="filterForm" onsubmit="return false">
<div class="d-flex align-items-center justify-content-between gap-3 mb-3">
<div>
<span class="wdw-eyebrow">Laptops</span>
<h1 class="wdw-heading h4 mb-0">Filters</h1>
<p class="small wdw-muted mb-0" id="filterCount" aria-live="polite">142 products match</p>
</div>
<button type="button" class="btn btn-sm btn-outline-secondary rounded-pill px-3 flex-shrink-0" id="filterClear">Clear all</button>
</div>
<div class="d-flex flex-wrap gap-2 mb-2 filter-chips" id="filterChips" aria-label="Selected filters"></div>
<div class="accordion accordion-flush filter-acc" id="filterAcc">
<div class="accordion-item bg-transparent">
<h2 class="accordion-header">
<button class="accordion-button bg-transparent shadow-none px-0 fw-semibold" type="button" data-bs-toggle="collapse" data-bs-target="#fg0" aria-expanded="true" aria-controls="fg0">Processor <span class="badge rounded-pill bg-primary ms-2 filter-badge d-none">0</span></button>
</h2>
<div id="fg0" class="accordion-collapse collapse show" data-bs-parent="#filterAcc">
<div class="accordion-body px-0 pt-0 list-group list-group-flush gap-1">
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f0_0"><input class="form-check-input m-0" type="checkbox" id="f0_0" value="Intel Core i9"><span class="flex-grow-1">Intel Core i9</span><span class="small wdw-muted">48</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f0_1"><input class="form-check-input m-0" type="checkbox" id="f0_1" value="Intel Core i7"><span class="flex-grow-1">Intel Core i7</span><span class="small wdw-muted">92</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f0_2"><input class="form-check-input m-0" type="checkbox" id="f0_2" value="Intel Core i5"><span class="flex-grow-1">Intel Core i5</span><span class="small wdw-muted">130</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f0_3"><input class="form-check-input m-0" type="checkbox" id="f0_3" value="AMD Ryzen 7"><span class="flex-grow-1">AMD Ryzen 7</span><span class="small wdw-muted">41</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f0_4"><input class="form-check-input m-0" type="checkbox" id="f0_4" value="Apple M3"><span class="flex-grow-1">Apple M3</span><span class="small wdw-muted">27</span></label>
</div>
</div>
</div>
<div class="accordion-item bg-transparent">
<h2 class="accordion-header">
<button class="accordion-button bg-transparent shadow-none px-0 fw-semibold collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#fg1" aria-expanded="false" aria-controls="fg1">Brand <span class="badge rounded-pill bg-primary ms-2 filter-badge d-none">0</span></button>
</h2>
<div id="fg1" class="accordion-collapse collapse" data-bs-parent="#filterAcc">
<div class="accordion-body px-0 pt-0 list-group list-group-flush gap-1">
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f1_0"><input class="form-check-input m-0" type="checkbox" id="f1_0" value="Apple"><span class="flex-grow-1">Apple</span><span class="small wdw-muted">27</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f1_1"><input class="form-check-input m-0" type="checkbox" id="f1_1" value="Dell"><span class="flex-grow-1">Dell</span><span class="small wdw-muted">64</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f1_2"><input class="form-check-input m-0" type="checkbox" id="f1_2" value="Lenovo"><span class="flex-grow-1">Lenovo</span><span class="small wdw-muted">88</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f1_3"><input class="form-check-input m-0" type="checkbox" id="f1_3" value="ASUS"><span class="flex-grow-1">ASUS</span><span class="small wdw-muted">71</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f1_4"><input class="form-check-input m-0" type="checkbox" id="f1_4" value="HP"><span class="flex-grow-1">HP</span><span class="small wdw-muted">59</span></label>
</div>
</div>
</div>
<div class="accordion-item bg-transparent">
<h2 class="accordion-header">
<button class="accordion-button bg-transparent shadow-none px-0 fw-semibold collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#fg2" aria-expanded="false" aria-controls="fg2">Screen size <span class="badge rounded-pill bg-primary ms-2 filter-badge d-none">0</span></button>
</h2>
<div id="fg2" class="accordion-collapse collapse" data-bs-parent="#filterAcc">
<div class="accordion-body px-0 pt-0 list-group list-group-flush gap-1">
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f2_0"><input class="form-check-input m-0" type="checkbox" id="f2_0" value="13 inch"><span class="flex-grow-1">13 inch</span><span class="small wdw-muted">52</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f2_1"><input class="form-check-input m-0" type="checkbox" id="f2_1" value="14 inch"><span class="flex-grow-1">14 inch</span><span class="small wdw-muted">77</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f2_2"><input class="form-check-input m-0" type="checkbox" id="f2_2" value="15.6 inch"><span class="flex-grow-1">15.6 inch</span><span class="small wdw-muted">103</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f2_3"><input class="form-check-input m-0" type="checkbox" id="f2_3" value="17 inch"><span class="flex-grow-1">17 inch</span><span class="small wdw-muted">18</span></label>
</div>
</div>
</div>
<div class="accordion-item bg-transparent">
<h2 class="accordion-header">
<button class="accordion-button bg-transparent shadow-none px-0 fw-semibold collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#fg3" aria-expanded="false" aria-controls="fg3">Operating system <span class="badge rounded-pill bg-primary ms-2 filter-badge d-none">0</span></button>
</h2>
<div id="fg3" class="accordion-collapse collapse" data-bs-parent="#filterAcc">
<div class="accordion-body px-0 pt-0 list-group list-group-flush gap-1">
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f3_0"><input class="form-check-input m-0" type="checkbox" id="f3_0" value="macOS"><span class="flex-grow-1">macOS</span><span class="small wdw-muted">27</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f3_1"><input class="form-check-input m-0" type="checkbox" id="f3_1" value="Windows 11"><span class="flex-grow-1">Windows 11</span><span class="small wdw-muted">214</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f3_2"><input class="form-check-input m-0" type="checkbox" id="f3_2" value="Linux"><span class="flex-grow-1">Linux</span><span class="small wdw-muted">12</span></label>
<label class="list-group-item bg-transparent border-0 rounded-3 d-flex align-items-center gap-3 py-2 px-2 filter-opt" for="f3_3"><input class="form-check-input m-0" type="checkbox" id="f3_3" value="ChromeOS"><span class="flex-grow-1">ChromeOS</span><span class="small wdw-muted">34</span></label>
</div>
</div>
</div>
</div>
<button type="submit" class="btn btn-primary rounded-pill w-100 mt-3" id="filterApply">Show results</button>
</form>
</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 */
.filter-acc {
--bs-accordion-btn-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%234f46e5' stroke-linecap='round' stroke-linejoin='round' stroke-width='2'%3E%3Cpath d='m2 5 6 6 6-6'/%3E%3C/svg%3E");
--bs-accordion-btn-active-icon: var(--bs-accordion-btn-icon);
}
[data-bs-theme="dark"] .filter-acc, [data-bs-theme="dark"] .filter-acc .accordion-button::after {
--bs-accordion-btn-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23a5b4fc' stroke-linecap='round' stroke-linejoin='round' stroke-width='2'%3E%3Cpath d='m2 5 6 6 6-6'/%3E%3C/svg%3E");
--bs-accordion-btn-active-icon: var(--bs-accordion-btn-icon);
}
.filter-opt .form-check-input { width: 1.25rem; height: 1.25rem; border-radius: .4rem; flex: none; border: 2px solid var(--bs-secondary-color); }
.filter-opt .form-check-input:checked { border-color: var(--bs-primary); }
.filter-opt { cursor: pointer; transition: background-color .15s; min-height: 44px; }
.filter-opt:hover { background: var(--bs-tertiary-bg) !important; }
.filter-acc .accordion-button { min-height: 52px; }
.filter-chips:empty { display: none !important; }
.filter-chips .badge { display: inline-flex; align-items: center; gap: .35rem; font-size: .8125rem; padding: .35rem .5rem .35rem .75rem; }
.filter-chips .chip-x { border: 0; background: transparent; color: inherit; padding: 0; width: 20px; height: 20px; border-radius: 50%; line-height: 1; font-size: 1rem; }
.filter-chips .chip-x:hover { background: rgba(var(--bs-primary-rgb), .2); }
function initProductFilter() {
const form = document.getElementById('filterForm');
if (!form) return;
const boxes = form.querySelectorAll('input[type="checkbox"]');
const count = document.getElementById('filterCount');
const apply = document.getElementById('filterApply');
const total = 142;
const chips = document.getElementById('filterChips');
const update = () => {
form.querySelectorAll('.accordion-item').forEach((item) => {
const n = item.querySelectorAll('input:checked').length;
const badge = item.querySelector('.filter-badge');
badge.textContent = n;
badge.classList.toggle('d-none', n === 0);
});
const checked = form.querySelectorAll('input:checked').length;
chips.innerHTML = '';
form.querySelectorAll('input:checked').forEach((b) => {
const chip = document.createElement('span');
chip.className = 'badge rounded-pill bg-primary-subtle text-primary-emphasis';
chip.append(b.value);
const x = document.createElement('button');
x.type = 'button';
x.className = 'chip-x';
x.setAttribute('aria-label', 'Remove filter ' + b.value);
x.innerHTML = '×';
x.addEventListener('click', () => { b.checked = false; update(); });
chip.append(x);
chips.append(chip);
});
const shown = checked ? Math.max(3, Math.round(total / (checked + 1.5))) : total;
count.textContent = shown + ' products match';
apply.textContent = checked ? 'Show ' + shown + ' results' : 'Show results';
};
boxes.forEach((b) => b.addEventListener('change', update));
document.getElementById('filterClear').addEventListener('click', () => {
boxes.forEach((b) => { b.checked = false; });
update();
});
boxes[0].checked = true;
boxes[6].checked = true;
update();
}
initProductFilter();
Built on Bootstrap 5.3.8 with plain JavaScript — no jQuery. Supports light and dark mode via data-bs-theme.
