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Multi-Select Dropdown Filter with search

Multi-Select Dropdown Filter with search

Interactive filtering component built with Alpine.js and Tailwind CSS, featuring searchable multi-select dropdowns with dynamic URL parameters. The system includes responsive design, real-time search functionality, and visual feedback through selected item tags that can be easily removed.

This tailwind example is contributed by Maxim, on 10-Dec-2024. Component is made with Tailwind CSS v3. It is responsive.

Select Dropdown Tag Cloud

Author Maxim

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Custom Checkboxes with Filters</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script defer src="https://unpkg.com/alpinejs@3.x.x/dist/cdn.min.js"></script>
</head>
<body class="bg-gray-200">
    <div class="min-h-screen p-4 md:p-8">
        <form method="get" action="" class="max-w-6xl mx-auto" x-data="{
            dropdowns: [
                {
                    name: 'country',
                    label: 'Country',
                    items: [
                        { value: 'usa', label: 'USA' },
                        { value: 'china', label: 'China' },
                        { value: 'japan', label: 'Japan' },
                        { value: 'germany', label: 'Germany' },
                        { value: 'uk', label: 'United Kingdom' },
                        { value: 'india', label: 'India' },
                        { value: 'france', label: 'France' },
                        { value: 'italy', label: 'Italy' },
                        { value: 'canada', label: 'Canada' },
                        { value: 'brazil', label: 'Brazil' }
                    ]
                },
                {
                    name: 'brand',
                    label: 'Brand',
                    items: [
                        { value: 'moetchandon', label: 'Moët & Chandon' },
                        { value: 'domperignon', label: 'Dom Pérignon' },
                        { value: 'veuveclicquot', label: 'Veuve Clicquot' },
                        { value: 'crystalroederer', label: 'Louis Roederer Cristal' },
                        { value: 'kruger', label: 'Krug' },
                        { value: 'bollinger', label: 'Bollinger' },
                        { value: 'taittinger', label: 'Taittinger' },
                        { value: 'perrierjouet', label: 'Perrier-Jouët' },
                        { value: 'lafite', label: 'Château Lafite Rothschild' },
                        { value: 'latour', label: 'Château Latour' },
                        { value: 'margaux', label: 'Château Margaux' },
                        { value: 'petrus', label: 'Château Pétrus' },
                        { value: 'romanee', label: 'Domaine de la Romanée-Conti' }
                    ]
                },
                {
                    name: 'abv',
                    label: 'ABV',
                    items: [
                        { value: '0-20', label: '0-20%' },
                        { value: '20-40', label: '20-40%' },
                        { value: '40-99', label: '%40+' }
                    ]
                }
            ],
            getUrlParams(name) {
                const params = new URLSearchParams(window.location.search);
                const values = params.getAll(name + '[]');
                return values.length > 0 ? values : [];
            },
            getSelectedItems(dropdown) {
                return this.$refs[dropdown.name] 
                    ? dropdown.items.filter(item => this.$refs[dropdown.name].selected.includes(item.value))
                    : [];
            }
        }">
            
            <div class="flex flex-wrap items-start gap-2 mb-4">
                <template x-for="dropdown in dropdowns" :key="dropdown.name">
                    <div x-data="{
                            open: false,
                            search: '',
                            selected: getUrlParams(dropdown.name),
                            get filteredItems() {
                                return dropdown.items.filter(item =>
                                    item.label.toLowerCase().includes(this.search.toLowerCase())
                                )
                            },
                            get selectedLabel() {
                                if (this.selected.length === 0) return dropdown.label;
                                return `${dropdown.label}: ${this.selected.length}`;
                            }
                        }" 
                        class="relative w-full md:w-auto"
                        :x-ref="dropdown.name">
                        
                        <template x-for="value in selected" :key="value">
                            <input type="hidden" :name="dropdown.name + '[]'" :value="value">
                        </template>

<button type="button"
                                @click="open = !open; $nextTick(() => { if(open) $refs.searchInput.focus() })"
                                class="inline-flex justify-between w-full bg-white rounded md:w-48 px-2 py-2 text-base text-stone-500 bg-gray-50 border border-stone-300 appearance-none focus:outline-none ring-0 focus:ring-2 focus:ring-rose-200 focus:border-rose-500 peer">
                            <span x-text="selectedLabel" class="truncate mx-2"></span>
                            <svg xmlns="http://www.w3.org/2000/svg" class="w-5 h-5 flex-shrink-0" viewBox="0 0 20 20" fill="currentColor">
                                <path fill-rule="evenodd" d="M6.293 9.293a1 1 0 011.414 0L10 11.586l2.293-2.293a1 1 0 111.414 1.414l-3 3a1 1 0 01-1.414 0l-3-3a1 1 0 010-1.414z" clip-rule="evenodd" />
                            </svg>
                        </button>

<div x-show="open"
                             @click.away="open = false"
                             class="absolute z-10 w-full mt-2 rounded bg-white ring-2 ring-rose-200 border border-rose-500"
                             style="display: none;">
                            
                            <div class="relative">
                                <input x-model="search"
                                       x-ref="searchInput"
                                       @focus="$el.select()"
                                       class="block w-full px-4 py-2 text-gray-800 rounded-t border-b focus:outline-none"
                                       type="text"
                                       :placeholder="'Search for a ' + dropdown.label.toLowerCase()"
                                       @click.stop>
                                
                                <button type="button"
                                        @click="search = ''"
                                        class="absolute inset-y-0 right-2 px-2 flex items-center"
                                        x-show="search.length > 0">
                                    <svg class="h-4 w-4 text-gray-400 hover:text-rose-600" fill="currentColor" viewBox="0 0 20 20">
                                        <path fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd" />
                                    </svg>
                                </button>
                            </div>

<div class="rounded-b max-h-60 overflow-y-auto [&::-webkit-scrollbar]:w-2 [&::-webkit-scrollbar-track]:bg-rose-100 [&::-webkit-scrollbar-thumb]:bg-rose-300">
                                <template x-for="item in filteredItems" :key="item.value">
                                    <div @click="selected.includes(item.value) ? selected = selected.filter(i => i !== item.value) : selected.push(item.value)"
                                         class="block px-4 py-2 text-gray-700 hover:bg-rose-200 hover:text-rose-500 cursor-pointer bg-white w-full"
                                         :class="{ 'bg-rose-200': selected.includes(item.value) }">
                                        <div class="flex items-center gap-2">
                                            <input type="checkbox"
                                                   :checked="selected.includes(item.value)"
                                                   class="w-4 h-4 border-gray-300 rounded focus:ring-blue-500 flex-shrink-0"
                                                   @click.stop>
                                            <span x-text="item.label" class="truncate"></span>
                                        </div>
                                    </div>
                                </template>
                            </div>
                        </div>
                    </div>
                </template>

<button type="submit"
                        class="w-full md:w-auto inline-flex justify-center font-medium appearance-none border border-rose-700 bg-rose-700 rounded px-8 py-2 text-base text-white hover:bg-rose-800 ring-0 peer">
                    Apply Filters
                </button>
            </div>

<div class="mb-6">
                <div class="flex flex-wrap gap-2">
                    <template x-for="dropdown in dropdowns" :key="dropdown.name">
                        <template x-if="$refs[dropdown.name] !== undefined">
                            <template x-for="item in getSelectedItems(dropdown)" :key="item.value">
                                <span class="inline-flex items-center px-3 py-1 rounded-full text-base bg-rose-100 text-rose-800">
                                    <span x-text="item.label"></span>
                                    <button type="button"
                                            @click="$refs[dropdown.name].selected = $refs[dropdown.name].selected.filter(i => i !== item.value); $refs[dropdown.name].$el.dispatchEvent(new Event('input'))"
                                            class="ml-2 inline-flex items-center p-0.5 hover:bg-blue-200 rounded-full">
                                        <svg class="h-3 w-3" fill="currentColor" viewBox="0 0 20 20">
                                            <path fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd" />
                                        </svg>
                                    </button>
                                </span>
                            </template>
                        </template>
                    </template>
                </div>
            </div>
        </form>
    </div>
</body>
</html>

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