效果动态图：
源代码：
<!doctype html><html><head><meta charset="utf-8"><title>HTML5 JS实现搜索匹配功能-</title><script src="/jquery/1.11.3/jquery.min.js"></script><style>div,li,ul {margin:0;padding:0;}ul li {list-style:none;}.basic-grey {width:600px;margin:5% 10%;}.basic-grey .Companies {position:relative;}.basic-grey .Companies ul {position:relative;height:210px;width:100%;overflow-y:auto;border:1px solid #DDD;display:none;}.basic-grey .Companies ul li {padding:3px 12px;}.basic-grey .Companies ul li:hover {background-color:#bebebe;cursor:pointer;}.basic-grey .Companies ul li.top {position:absolute;top:0;}</style></head><body><link rel="stylesheet" type="text/css" href="/jquery/bootstrap-3.3.4.css"><div class="g-container"> <form action="" class="basic-grey"><div class="form-group"><label for="lastname" class="control-label">公司选择:</label><div class="Companies"><input class="form-control" type="text" placeholder="请选择" id="js-groupId"><input type="hidden" id="groupId"><ul id="groupid"><li data-id="827"><a href="javascript:void(0)">厦门集众筹智科技有限公司</a></li><li data-id="826"><a href="javascript:void(0)">苏州高新区文体发展有限公司</a></li><li data-id="825"><a href="javascript:void(0)">美罗城test</a></li><li data-id="824"><a href="javascript:void(0)">深圳市高收益科技开发有限公司</a></li><li data-id="823"><a href="javascript:void(0)">深圳市蜗爱生活科技开发有限公司</a></li><li data-id="815"><a href="javascript:void(0)">深圳市宇恒乐便利店管理有限公司</a></li><li data-id="814"><a href="javascript:void(0)">广东胜佳超市有限公司</a></li><li data-id="813"><a href="javascript:void(0)">顺义李先生说</a></li><li data-id="812"><a href="javascript:void(0)">十足集团股份有限公司</a></li><li data-id="811"><a href="javascript:void(0)">宏图三胞高科技术有限公司</a></li><li data-id="810"><a href="javascript:void(0)">九州连锁超市公司</a></li><li data-id="809"><a href="javascript:void(0)">李先生</a></li><li data-id="808"><a href="javascript:void(0)">李先生牛肉面快餐厅</a></li><li data-id="807"><a href="javascript:void(0)">李先生牛肉面快餐厅</a></li><li data-id="806"><a href="javascript:void(0)">美宜佳便利店有限公司</a></li><li data-id="805"><a href="javascript:void(0)">上海一嗨汽车租赁有限公司</a></li><li data-id="804"><a href="javascript:void(0)">龙湖商业地产（重庆区）</a></li><li data-id="803"><a href="javascript:void(0)">阜阳华联集团股份有限公司</a></li><li data-id="802"><a href="javascript:void(0)">百万庄园</a></li><li data-id="801"><a href="javascript:void(0)">百万庄园</a></li><li data-id="800"><a href="javascript:void(0)">上海恭胜酒店管理有限公司</a></li><li data-id="799"><a href="javascript:void(0)">北京好伦哥餐饮有限公司</a></li><li data-id="798"><a href="javascript:void(0)">富驿酒店集团有限公司</a></li></ul></div></div></form></div><script>jQuery.expr[':'].Contains = function(a, i, m) {return (a.textContent || a.innerText || "").toUpperCase().indexOf(m[3].toUpperCase()) >= 0;};function filterList(list) {$('#js-groupId').bind('input propertychange', function() {var filter = $(this).val();if (filter) {$matches = $(list).find('a:Contains(' + filter + ')').parent();$('li', list).not($matches).slideUp();$matches.slideDown();} else {$(list).find("li").slideDown();}});}$(function() {filterList($("#groupid"));$('#js-groupId').bind('focus', function() {$('#groupid').slideDown();}).bind('blur', function() {$('#groupid').slideUp();})$('#groupid').on('click', 'li', function() {$('#js-groupId').val($(this).text())$('#groupId').val($(this).data('id'))$('#groupid').slideUp()});})</script></body></html>
