仿Google自动提示 SearchSuggess

 曾祥展曾祥展

 

 

页面:

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





<!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 runat="server">

    <title>seach</title>

    <script type="text/javascript"  src="jquery.min.js" ></script>

     <script type="text/javascript" src="js.js"></script>

    <link href="css.css" rel="stylesheet" type="text/css" />    

    </head>

<body>

    <form id="form1" runat="server">

  

    

        <div onClick="keyup_close();">

        <ul>

          <li class="h_14">

        <iframe style="DISPLAY: none" id="if_keyup" name="if_keyup"></iframe>

        <input id="kw" name="kw" class="h_15" onKeyUp="keyup(event)"   autocomplete="off" />      

        <div style="DISPLAY: none" id="keyup_d" class="sokeyup" ></div>

         </li>

         <li class="h_16">

            <input style="CURSOR: pointer" onClick="so_search();"  src="searchbuttom.gif" type="image"  />

        </li>

        </ul>

        </div>  



    </form>

</body>

</html>

 

css:

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); 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}

 

js:

 

 

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-"+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-"+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+'<ul class="sokeyup_4"><li id="l_0" style="display:none;"></li><li class="sokeyup_5" onclick="keyup_close()">关闭</li></ul>');

                $("#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;

        }

    }

});

ashx:

<%@ 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 += "<ul class='sokeyup_1' onmouseover='keyup_over(" + i + ")' onmouseout='keyup_out(" + i + ")' onclick='keyup_click(" + i + ")' id='u_" + i + "'>";

                htmlstr += "<li class='sokeyup_2' id='l_" + i + "'>" + kword + "</li>";

                htmlstr += "<li class='sokeyup_3'>" + a + " 结果</li></ul>";

                i++;

            }

            context.Response.Write(htmlstr);

            context.Response.End();

            sdr.Close();

            con.Close();



        }

    }

 

    public bool IsReusable {

        get {

            return false;

        }

    }



}

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