238 lines
11 KiB
HTML
238 lines
11 KiB
HTML
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>带搜索功能的下拉选择框</title>
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<!-- 引入 Tailwind CSS -->
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<script src="https://cdn.tailwindcss.com"></script>
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<!-- 引入 Font Awesome -->
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<link href="https://cdn.jsdelivr.net/npm/font-awesome@4.7.0/css/font-awesome.min.css" rel="stylesheet">
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<!-- 配置 Tailwind 自定义颜色 -->
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<script>
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tailwind.config = {
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theme: {
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extend: {
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colors: {
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primary: '#3B82F6',
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secondary: '#64748B',
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neutral: '#F1F5F9',
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},
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fontFamily: {
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inter: ['Inter', 'sans-serif'],
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},
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}
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}
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}
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</script>
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<!-- 自定义工具类 -->
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<style type="text/tailwindcss">
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@layer utilities {
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.content-auto {
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content-visibility: auto;
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}
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.dropdown-shadow {
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box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
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}
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.transition-custom {
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transition: all 0.2s ease-in-out;
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}
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}
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</style>
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</head>
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<body class="bg-gray-50 min-h-screen font-inter text-gray-800">
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<div class="container mx-auto px-4 py-16 max-w-2xl">
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<h1 class="text-[clamp(1.5rem,3vw,2.5rem)] font-bold text-gray-900 mb-8 text-center">带搜索功能的下拉选择框</h1>
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<div class="bg-white rounded-xl shadow-lg p-8">
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<div class="mb-8">
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<label for="searchSelect" class="block text-sm font-medium text-gray-700 mb-2">请选择城市</label>
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<!-- 搜索选择框容器 -->
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<div class="relative" id="searchSelectContainer">
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<!-- 选择框主体 -->
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<div class="relative">
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<input
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type="text"
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id="searchSelect"
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class="w-full pl-4 pr-10 py-2.5 border border-gray-300 rounded-lg focus:ring-2 focus:ring-primary/30 focus:border-primary outline-none transition-all text-sm"
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placeholder="输入城市名称搜索..."
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readonly
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onclick="toggleDropdown()"
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>
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<span class="absolute right-3 top-1/2 transform -translate-y-1/2 text-gray-400 transition-transform duration-200" id="arrowIcon">
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<i class="fa fa-chevron-down"></i>
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</span>
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</div>
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<!-- 下拉内容 -->
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<div id="dropdownContent" class="absolute z-10 mt-1 w-full bg-white rounded-lg dropdown-shadow overflow-hidden hidden">
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<!-- 搜索输入框 -->
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<div class="p-2 border-b border-gray-100">
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<input
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type="text"
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id="searchInput"
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class="w-full px-3 py-2 border border-gray-200 rounded-lg focus:ring-1 focus:ring-primary focus:border-primary outline-none text-sm"
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placeholder="搜索城市..."
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oninput="filterOptions()"
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autofocus
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>
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</div>
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<!-- 选项列表 -->
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<div id="optionsList" class="max-h-60 overflow-y-auto">
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<ul>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="beijing">北京</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="shanghai">上海</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="guangzhou">广州</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="shenzhen">深圳</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="hangzhou">杭州</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="nanjing">南京</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="chengdu">成都</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="chongqing">重庆</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="wuhan">武汉</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="xian">西安</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="suzhou">苏州</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="tianjin">天津</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="qingdao">青岛</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="xiamen">厦门</li>
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<li class="option px-4 py-2.5 hover:bg-neutral cursor-pointer text-sm transition-custom" data-value="sanya">三亚</li>
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</ul>
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</div>
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<!-- 无结果提示 -->
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<div id="noResult" class="px-4 py-4 text-center text-gray-500 text-sm hidden">
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没有找到匹配的城市
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</div>
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</div>
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</div>
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<!-- 选择结果显示 -->
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<div id="selectedResult" class="mt-4 text-sm text-gray-600 hidden">
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<p>你选择的城市是：<span id="selectedValue" class="font-medium text-primary"></span></p>
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</div>
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</div>
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<div class="text-center">
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<p class="text-gray-500 text-sm">点击选择框，开始输入城市名称进行搜索</p>
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</div>
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</div>
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</div>
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<script>
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// 控制下拉框显示/隐藏
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function toggleDropdown() {
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const dropdownContent = document.getElementById('dropdownContent');
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const arrowIcon = document.getElementById('arrowIcon');
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if (dropdownContent.classList.contains('hidden')) {
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dropdownContent.classList.remove('hidden');
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arrowIcon.classList.add('rotate-180');
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document.getElementById('searchInput').focus();
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// 点击外部关闭下拉框
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document.addEventListener('click', handleOutsideClick);
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} else {
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closeDropdown();
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}
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}
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// 关闭下拉框
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function closeDropdown() {
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const dropdownContent = document.getElementById('dropdownContent');
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const arrowIcon = document.getElementById('arrowIcon');
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dropdownContent.classList.add('hidden');
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arrowIcon.classList.remove('rotate-180');
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document.removeEventListener('click', handleOutsideClick);
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}
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// 点击外部关闭下拉框
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function handleOutsideClick(event) {
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const container = document.getElementById('searchSelectContainer');
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if (!container.contains(event.target)) {
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closeDropdown();
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}
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}
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// 筛选选项
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function filterOptions() {
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const searchText = document.getElementById('searchInput').value.toLowerCase();
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const options = document.querySelectorAll('.option');
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const noResult = document.getElementById('noResult');
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let hasMatch = false;
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options.forEach(option => {
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const text = option.textContent.toLowerCase();
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if (text.includes(searchText)) {
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option.style.display = 'block';
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hasMatch = true;
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} else {
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option.style.display = 'none';
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}
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});
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// 显示或隐藏无结果提示
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if (searchText && !hasMatch) {
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noResult.classList.remove('hidden');
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} else {
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noResult.classList.add('hidden');
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}
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}
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// 选择选项
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document.querySelectorAll('.option').forEach(option => {
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option.addEventListener('click', function() {
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const value = this.textContent;
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document.getElementById('searchSelect').value = value;
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document.getElementById('selectedValue').textContent = value;
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document.getElementById('selectedResult').classList.remove('hidden');
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closeDropdown();
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});
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});
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// 键盘导航
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document.getElementById('searchInput').addEventListener('keydown', function(e) {
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const options = document.querySelectorAll('.option:not([style*="display: none"])');
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const activeOption = document.querySelector('.option.bg-neutral');
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let index = -1;
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if (activeOption) {
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index = Array.from(options).indexOf(activeOption);
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}
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// 向下箭头
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if (e.key === 'ArrowDown') {
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e.preventDefault();
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if (activeOption) {
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activeOption.classList.remove('bg-neutral');
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}
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const nextIndex = (index + 1) % options.length;
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if (options[nextIndex]) {
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options[nextIndex].classList.add('bg-neutral');
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options[nextIndex].scrollIntoView({ block: 'nearest' });
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}
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}
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// 向上箭头
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else if (e.key === 'ArrowUp') {
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e.preventDefault();
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if (activeOption) {
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activeOption.classList.remove('bg-neutral');
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}
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const prevIndex = index > 0 ? index - 1 : options.length - 1;
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if (options[prevIndex]) {
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options[prevIndex].classList.add('bg-neutral');
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options[prevIndex].scrollIntoView({ block: 'nearest' });
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}
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}
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// 回车键
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else if (e.key === 'Enter') {
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e.preventDefault();
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if (activeOption) {
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activeOption.click();
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}
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}
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});
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</script>
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</body>
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</html>
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