图片替换

html代码：

<%@ 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>无标题页</title>
    <link type="text/css" rel="Stylesheet" href="css/StyleSheet.css" />

    <script type="text/javascript" src="js/jquery-1.9.1.js"></script>

    <script type="text/javascript" language="javascript">
$(document).ready(function(){

//中图广告
var zt_up="<%=ztStr %>";
var zt_up_arr=new Array();
zt_up_arr=zt_up.split(';');
var zt_up_index=0;
function UpdateZt_up()
{

    $(".ztgg_container_up img").attr("src",zt_up_arr[zt_up_index]);
    $(".ztgg_container_down img").attr("src",zt_up_arr[zt_up_index+1]);
    if(zt_up_index==zt_up_arr.length-2)
    zt_up_index=0;
    else
    zt_up_index=zt_up_index+2;

}
UpdateZt_up();
window.setInterval(UpdateZt_up,3000);

//小图广告
var xtgg="<%=xtStr %>";
var xtgg_arr=new Array();
xtgg_arr=xtgg.split(';');
var xtgg_index=0;
var child=$(".xtgg_container").find(".xtgg_container_item");
function updateXt()
{

for(var i=0;i<child.length;i++)
{
  $(child[i]).find("img").attr("src",xtgg_arr[xtgg_index]);
  xtgg_index++;
}
 if(xtgg_index==xtgg_arr.length-5)
 xtgg_index=0;

}

updateXt();
window.setInterval(updateXt,5000);

});


    </script>

</head>
<body>
    <form id="form1" runat="server">
    <div>
        <div class="gg_container">
            <div class="dt_container">
            </div>
            <div class="ztgg_container">
                <div class="ztgg_container_up">
                    <img /></div>
                <div class="ztgg_container_down">
                    <img /></div>
            </div>
            <div class="login">
            </div>
            <div class="xtgg_container">
                <div class="xtgg_container_item" style=" margin-left:0px;">
                <img />
                </div>
                <div class="xtgg_container_item">
                   <img />
                </div>
                <div class="xtgg_container_item">
                   <img />
                </div>
                <div class="xtgg_container_item">
                   <img />
                </div>
                <div class="xtgg_container_item" style=" margin-right:0px;">
                   <img />
                </div>
            </div>
        </div>
    </div>
    </form>
</body>
</html>

cs代码：

    public string ztStr = "";
    public string xtStr = "";
    protected void Page_Load(object sender, EventArgs e)
    {
        ztStr = "img/g1.jpg;img/g2.jpg;img/g3.gif;img/g5.gif";
        xtStr = "img/g4.jpg;img/g4.jpg;img/g4.jpg;img/g4.jpg;img/g4.jpg;";
        xtStr +="img/g1.jpg;img/g1.jpg;img/g1.jpg;img/g1.jpg;img/g1.jpg;";
        xtStr += "img/g8.jpg;img/g8.jpg;img/g8.jpg;img/g8.jpg;img/g8.jpg";
    }

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原文地址：https://www.cnblogs.com/engine/p/4256627.html