dedecms织梦使用ajax实现搜索下拉提示功能

<script language="javascript" type="text/javascript" src="{dede:global.cfg_templets_skin/}/js/jquery-1.7.1.min.js"></script><script type="text/javascript">    function lookup(inputString) {        if(inputString.length == 0) {            // Hide the suggestion box.            $('#suggestions').hide();        } else {            $.post("/plus/search_list.php", {queryString: ""+inputString+""}, function(data){                if(data.length >0) {                    $('#suggestions').show();                    $('#autoSuggestionsList').html(data);                }            });        }    } // lookup        function fill(thisValue) {        $('#inputString').val(thisValue);        setTimeout("$('#suggestions').hide();", 200);    } </script>

jquery-1.7.1.min.js这个jquery库需要你自己下载，这里就不多说了。本人用的是这个版本的。
 

这段代码中的search_list.php就是本文下载的文件，下载后放入/plus目录下。

打开head.htm，找到搜索部分的from表单代码修改为
 

<form name="formsearch" action="{dede:global.cfg_cmsurl/}/plus/search.php" id="formkeyword">	<label for="header-subscribe-email" class="text"></label><input type="hidden" name="kwtype" value="0"/><input type="text" name="q" size="24" value="在这里搜索..." onfocus="if(this.value=='在这里搜索...'){this.value='';}" onblur="if(this.value==''){this.value='在这里搜索...';}" id="inputString" onkeyup="lookup(this.value);" onblur="fill();" class="f-text"><input type="submit" class="commit" value="搜索"/>	<div class="suggestionsBox" id="suggestions" style="display: none;">		<div class="suggestionList">			<ul id="autoSuggestionsList">			</ul>		</div>	</div></form>

.suggestionsBox {	position: relative;	left: 0px;	width: 250px;	background: white;	border: 1px solid #dcdcdc;	color: #323232;	z-index: 999;}.suggestionList {	margin: 0px;	padding: 0px;}.suggestionList li {	margin: 0px 0px 3px 0px;	position: relative;	padding: 3px;	cursor: pointer;	list-style: none;	padding-left: 5px;	height: 20px;	overflow: hidden}.suggestionList li:hover {	background-color: #659CD8;}.jr {	position: absolute;	top: 9px;	right: -5px}