jQuery ajax仿Google自动提示SearchSuggess功能示例

 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>   
 
 
 
 
 

 UL { padding: 0px; LIST-STYLE-TYPE: none; MARGIN: 0px; LIST-STYLE-IMAGE: none; height: 52px; } LI { PADDING-BOTTOM: 0px; LIST-STYLE-TYPE: none; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; LIST-STYLE-IMAGE: none; PADDING-TOP: 0px} .h_14 { BACKGROUND-IMAGE: url(text_search.jpg-600); TEXT-ALIGN: left; PADDING-BOTTOM: 1px; LINE-HEIGHT: 26px; MARGIN-TOP: 3px; PADDING-LEFT: 4px; WIDTH: 245px; BACKGROUND-REPEAT: no-repeat; BACKGROUND-POSITION: center 50%; FLOAT: left; HEIGHT: 26px; MARGIN-LEFT: 3px; VERTICAL-ALIGN: middle; OVERFLOW: hidden; MARGIN-RIGHT: 3px; PADDING-TOP: 2px} .h_15 { BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; PADDING-BOTTOM: 0px; LINE-HEIGHT: 20px; PADDING-LEFT: 0px; WIDTH: 240px; PADDING-RIGHT: 0px; DISPLAY: block; FLOAT: left; HEIGHT: 20px; MARGIN-LEFT: 0px; FONT-SIZE: 14px; VERTICAL-ALIGN: middle; BORDER-TOP: 0px; BORDER-RIGHT: 0px; PADDING-TOP: 4px} .h_16 { WIDTH: 57px; FLOAT: left; HEIGHT: 32px; OVERFLOW: hidden; CURSOR: pointer} .sokeyup { Z-INDEX: 10000; BORDER-BOTTOM: #000000 1px solid; POSITION: absolute; BORDER-LEFT: #000000 1px solid; WIDTH: 245px; DISPLAY: none; CLEAR: both; OVERFLOW: hidden; BORDER-TOP: #000000 1px solid; BORDER-RIGHT: #000000 1px solid} .sokeyup_1 { LINE-HEIGHT: 20px; PADDING-LEFT: 4px; WIDTH: 237px; PADDING-RIGHT: 4px; HEIGHT: 20px; CLEAR: both; OVERFLOW: hidden} .sokeyup_2 { LINE-HEIGHT: 20px; WIDTH: 140px; FLOAT: left; HEIGHT: 20px; COLOR: #4c4c4c} .sokeyup_3 { TEXT-ALIGN: right; LINE-HEIGHT: 20px; WIDTH: 97px; FLOAT: right; HEIGHT: 20px; COLOR: #008000} .sokeyup_4 { LINE-HEIGHT: 20px; WIDTH: 237px; HEIGHT: 20px } .sokeyup_5 { LINE-HEIGHT: 20px; FLOAT: right; HEIGHT: 20px; COLOR: #0000cc; CURSOR: pointer; TEXT-DECORATION: underline} 

 function so_search(){ var kw = $("#kw").val(); var kid = 0; var kname=$("#select_kid").html(); kw = encodeURI(kw); if(kw == ''){ alert("请输入要查找的关键词"); }else{ location.href="search-" rel="external nofollow" rel="external nofollow" +kw+".html"; } } //关闭搜索提示 function keyup_close(){ $("#keyup_d").hide(); } // function keyup_over(id){ $("#u_"+id).css("background-color","#0000CC"); $("#l_"+id).css("color","#fff"); } function keyup_out(id){ $("#u_"+id).css("background-color","#fff"); $("#l_"+id).css("color","#000"); } function keyup_click(id){ $("#keyup_d").hide(); var kw=$("#l_"+id).html(); kw = encodeURI(kw); location.href="search-" rel="external nofollow" rel="external nofollow" +kw+".html"; } function keyup(event){ if(window.event){ var key =window.event.keyCode; }else{ var key =event.which; } if(key!=38&&key!=40&&key!=13){ var kw=$("#kw").val(); //跨域获取搜索提示 var url ="JsonHandler.ashx?kw=" + encodeURI(kw) + "&time=" + new Date().toString();//中文 $.get(url,function(data){ if (data!='') { $("#keyup_d").html(data+'
关闭
'); $("#keyup_d").show(); } else { $("#keyup_d").hide(); } } ); } } var ul_id=0; $(window).keydown(function(event){ if(window.event){ var key =window.event.keyCode; }else{ var key =event.which; } if (key==13) { if (searchFocus == true) { } } var ulcount=$("#keyup_d ul").size()-1; if($("#keyup_d").css("display")=="block"){ //向上 $("#l_0").html($("#kw").val()); if(key==13) { if ($("#kw").val()!= "") { so_search(); } } if (key==38) { ul_id--; if(ul_id<0){ ul_id = ulcount; keyup_over(ul_id); }else{ keyup_out(ul_id+1); keyup_over(ul_id); } $("#kw").val($("#l_"+ul_id).html()); return false; } //向下 if (key==40 ) { $("#l_0").html($("#kw").val()); ul_id++; if(ul_id>ulcount){ ul_id=0; keyup_out(ulcount); }else{ keyup_out(ul_id-1); keyup_over(ul_id); } $("#kw").val($("#l_"+ul_id).html()); return false; } } }); 

 <%@ WebHandler Language="C#" Class="JsonHandler" %> using System; using System.Web; using System.Data.SqlClient; using System.Data; public class JsonHandler : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; string Key = context.Request["kw"]; if (Key !=null&&Key!="") { SqlConnection con = new SqlConnection("server=JUQI;database=NorthWind;uid=sa;pwd=sa;"); con.Open(); string str = "select distinct keyword,num from search where keyword like @kw order by keyword"; SqlCommand com = new SqlCommand(str, con); com.Parameters.Add("@kw", SqlDbType.NVarChar).Value = "%"+ Key + "%"; SqlDataReader sdr = com.ExecuteReader(); string htmlstr = ""; int i = 1; while (sdr.Read()) { string kword = sdr["keyword"].ToString(); string a = sdr["num"].ToString(); htmlstr += "
"; htmlstr += "
" + kword + "
"; htmlstr += "
" + a + " 结果
"; i++; } context.Response.Write(htmlstr); context.Response.End(); sdr.Close(); con.Close(); } } public bool IsReusable { get { return false; } } } 

 ALTER PROCEDURE [dbo].[suggest_search] @kw VARCHAR(100) ,@cityid int as begin SELECT TOP 10 * FROM  dbo.SearchIndex WHERE cityid=@cityid and keyword LIKE '' + @kw + '%' UNION ALL SELECT TOP 10 * FROM  dbo.SearchIndex WHERE cityid= @cityid and pinyin LIKE '' + @kw + '%' ORDER BY searchtimes DESC END 

 var result = list.OrderByDescending(t => t.searchtimes).Select(t => t.keyword.Replace("'", "")).Take(10); string json = JsonConvert.SerializeObject(result, Formatting.Indented); string renderJSON = "KISSY.Suggest.callback({'result':" + json.Replace("\"", "\'") + "})";