65 lines
2.9 KiB
Plaintext
65 lines
2.9 KiB
Plaintext
<!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>Aurora Admin · AutoComplete</title>
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<link rel="stylesheet" href="../.design_library/aurora-admin/colors_and_type.css" />
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<link rel="stylesheet" href="./AutoComplete.css" />
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</head>
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<body>
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<div class="aa-page">
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<h2 class="aa-h2">AutoComplete 自动完成</h2>
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<p class="aa-desc">输入时匹配建议，高亮关键字，支持键盘上下选择与回车。</p>
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<div class="aa-demo">
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<div class="aa-autocomplete" id="ac">
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<input class="aa-autocomplete-input" id="input" placeholder="输入城市，如「北」" />
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<div class="aa-autocomplete-pop" id="pop" style="display:none"></div>
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</div>
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<p class="aa-code-tip" id="out">试试输入：北京、上海、广州…</p>
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</div>
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</div>
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<script>
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var data = ['北京', '上海', '广州', '深圳', '杭州', '成都', '重庆', '武汉', '西安', '南京', '苏州', '天津'];
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var root = document.getElementById('ac');
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var input = document.getElementById('input');
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var pop = document.getElementById('pop');
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var out = document.getElementById('out');
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var active = -1, list = [];
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function highlight(text, q) {
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if (!q) return text;
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return text.replace(new RegExp('(' + q.replace(/[.*+?^${}()|[\]\\]/g, '\\$&') + ')', 'g'), '<mark>$1</mark>');
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}
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function render() {
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if (!list.length) { pop.style.display = 'none'; return; }
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pop.style.display = 'block';
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pop.innerHTML = list.map(function (it, i) {
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return '<div class="aa-autocomplete-item' + (i === active ? ' is-active' : '') + '" role="option" data-i="' + i + '">' + highlight(it, input.value.trim()) + '</div>';
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}).join('');
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}
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input.addEventListener('input', function () {
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var q = input.value.trim();
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active = -1;
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list = q ? data.filter(function (d) { return d.indexOf(q) >= 0; }) : [];
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render();
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});
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input.addEventListener('keydown', function (e) {
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if (pop.style.display === 'none') return;
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if (e.key === 'ArrowDown') { e.preventDefault(); active = Math.min(list.length - 1, active + 1); render(); }
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else if (e.key === 'ArrowUp') { e.preventDefault(); active = Math.max(0, active - 1); render(); }
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else if (e.key === 'Enter' && active >= 0) { choose(active); }
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else if (e.key === 'Escape') { pop.style.display = 'none'; }
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});
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function choose(i) { input.value = list[i]; out.textContent = '已选择：' + list[i]; pop.style.display = 'none'; }
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pop.addEventListener('click', function (e) {
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var it = e.target.closest('.aa-autocomplete-item');
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if (it) choose(parseInt(it.dataset.i, 10));
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});
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document.addEventListener('click', function (e) { if (!root.contains(e.target)) pop.style.display = 'none'; });
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</script>
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</body>
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</html>
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