本篇文章主要是對用jQuery模擬select下拉框的簡單示例代碼進行了介紹，需要的朋友可以過來參考下，希望對大家有所幫助
很多時候，美工會覺得默認的select下拉框很難看（特別是右側的下拉箭頭按鈕），他們通常喜歡用一個自定義的圖標來代替這個按鈕。這樣就只能用 js + div 來模擬了，倒騰了一番，用jQuery模擬了下，當然網上這種文章也不少，只是懶得去看找 代碼如下: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>自己實現的下拉框</title> <style type="text/css" media="all"> *{font-size:12px;line-height:18px;list-style:none;padding:0;margin:0;text-decoration:none;color:#000;border:0} .page{text-align:center;margin:50px;} input{border-bottom:solid 1px #ccc;height:18px} .expand{display:none;position:absolute;width:200px;height:100px;overflow-y:auto;border:solid 1px #ccc}; .expand li{margin:1px 0;background:#fff} .expand a{text-decoration:none;display:block;padding:0 5px;background:#efefef;margin:1px 0} .expand a:hover{background:#ff9} </style> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.min.js"></script> <script type="text/javascript"> function showExpand(targetId, expandId, expand_class) { //先關掉其它彈出的層 if (expand_class != undefined) { $("." + expand_class).hide(); } //判斷是否為IE var isIE = (! +[1, ]); var expand = $("#" + expandId); var target = $("#" + targetId); var dx = 0; if (isIE) { dx = -2; } else { dx = 0; } expand.get(0).style.left = target.get(0).getBoundingClientRect().left + dx + "px"; if (isIE) { dx = 17; } else { dx = 19; } expand.get(0).style.top = parseInt(target.get(0).getBoundingClientRect().top) + dx + "px"; expand.show(); //每個li點擊時賦值 $("#" + expandId).find("li").each(function (i) { $(this).show().click(function () { target.val($(this).text().split(' ')[1]); expand.hide(); }) }) } function search(srcId, expandId) { var expand = $("#" + expandId); var src = $("#" + srcId); var A = expand.find("a"); var v = src.val().toUpperCase(); A.each(function (i) { if (v.length >= 2) { if ($(this).text().toUpperCase().indexOf(v) == -1) { $(this).parent().hide(); } else { $(this).parent().show(); } } if (v.length <= 0) { $(this).parent().show(); } }) src.val(v); } $().ready(function(){ $("#txt_city").keyup(function(){ search('txt_city','city_select1'); }).focus(function(){ showExpand('txt_city','city_select1','expand') }) $("#txt_city2").keyup(function(){ search('txt_city2','city_select2'); }).focus(function(){ showExpand('txt_city2','city_select2','expand') }) }) function fnTest(){ document.getElementById("txtTarget").value = document.getElementById("txtSrc").value; } </script> </head> <body> <div class="page" style="text-align: center"> <input type="text" value="" id="txt_city" class="input_expand" /><a href="#" onclick="showExpand('txt_city','city_select1','expand')">▼</a> <div class="expand" id="city_select1"> <ul> <li><a href="javascript:void(0)">SH 上海</a></li> <li><a href="javascript:void(0)">BJ 北京</a></li> <li><a href="javascript:void(0)">HZ 杭州</a></li> <li><a href="javascript:void(0)">WH 武漢</a></li> <li><a href="javascript:void(0)">NJ 南京</a></li> <li><a href="javascript:void(0)">WX 無錫</a></li> </ul> </div> <input type="text" value="" id="txt_city2" class="input_expand" /><a href="#" onclick="showExpand('txt_city2','city_select2','expand')">▼</a> <div class="expand" id="city_select2"> <ul> <li><a href="javascript:void(0)">CN 中文</a></li> <li><a href="javascript:void(0)">EN 英語</a></li> <li><a href="javascript:void(0)">JP 日本</a></li> <li><a href="javascript:void(0)">RA 俄語</a></li> <li><a href="javascript:void(0)">FA 法語</a></li> <li><a href="javascript:void(0)">00 其它</a></li> </ul> </div> <br/> <br/> <input type="text" id="txtSrc" onkeyup="fnTest()" /> <br/> <input type="text" id="txtTarget" /> </div> </body> </html>