进度条和等待框

来源：互联网发布：键盘测试软件在线编辑：程序博客网时间：2024/06/09 21:35

<!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>JS 进度条和等待框</title>

            // 给 URL 参数增加随机数字
            String.prototype.toRandom = function () {
                var res;
                if (this == "") {
                    res = "s=" + Math.random();
                }
                else {
                    res = this + "&s=" + Math.random();
                }
                return res;
            }

            // 同步操作
            this.inPhase = function () {
                var msg;
                var xmlhttp = createXmlHttp();
                if (xmlhttp == null) {
                    alert("创建XMLHTTP出错！");
                    return -1;
                }
                xmlhttp.Open("GET", url + "?" + param.toRandom(), false);
                xmlhttp.Send();

                if (xmlhttp.status == 200) {
                    msg = xmlhttp.responseText;
                    xmlhttp = null;
                }
                return msg;
            }

// 异步执行 completeMethod : 封装的一个方法，包含一个参数
this.asynchronism = function (completeMethod) {

                var msg;
                var xmlhttp = createXmlHttp();
                if (xmlhttp == null) {
                    alert("创建XMLHTTP出错！");
                    return -1;
                }
                //打开连接，true表示异步提交，url 为接收请求并进行处理的页面
                xmlhttp.open("post", url + "?" + param.toRandom(), true);

                //当方法为post时需要如下设置http头
                xmlhttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
                //发送数据
                xmlhttp.send(null);

                xmlhttp.onreadystatechange = function () {
                    if (xmlhttp.readyState == 4 && xmlhttp.status ==200) {
                        msg = xmlhttp.responseText;
                        xmlhttp = null;
                        if (completeMethod != null) {
                            completeMethod(msg);
                        }
                    }
                }
            }

}

        // GIF 等待框
        function waitGif() {
            var name, age;
            name = document.getElementById("txtUserName").value;
            age = document.getElementById("txtAge").value;
            var url = "AjaxPage.aspx"
            var param = "name=" + escape(name) + "&age=" + escape(age) + "&times=" + escape(document.getElementById("txtWaitTimes").value);
            var ajax = new AjaxService(url, param);
            // 同步执行，锁屏无效果
            // document.getElementById("divMsg").innerHTML = "Request Value :" + ajax.inPhase();
            //异步执行
            /// XmlHttp 异步执行后回调方法
            var completeMethod = function (msg) {
                document.getElementById("divMsg").innerHTML = "Request Value " + msg;
                unLockScreen();
            }
            lockscreen(); //锁屏
            ajax.asynchronism(completeMethod);
        }

        /// 锁屏
        function lockscreen() {
            var sWidth, sHeight;
            var imgPath = "loading.gif";
            sWidth = screen.width - 20;
            sHeight = screen.height - 170;
            var bgObj = document.createElement("div");
            bgObj.setAttribute("id", "divLock");
            bgObj.style.position = "absolute";
            bgObj.style.top = "0";
            bgObj.style.background = "#cccccc";
            bgObj.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
            bgObj.style.opacity = "0.6";
            bgObj.style.left = "0";
            bgObj.style.width = sWidth + "px";
            bgObj.style.height = sHeight + "px";
            bgObj.style.zIndex = "100";
            document.body.appendChild(bgObj);
            var html = "<table border=/"0/" width=/"" + sWidth + "/" height=/"" + sHeight + "/"><tr><td valign=/"middle/" align=/"center/"><image src=/"" + imgPath + "/"></td></tr></table>";
            bgObj.innerHTML = html;
            /// 解锁
            bgObj.onclick = function () {
                // unLockScreen();
            }
        }

        /// 解锁
        function unLockScreen() {
            var divLock = document.getElementById("divLock");
            if (divLock == null) return;
            document.body.removeChild(divLock);
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <div id="divMsg">
        </div>
        <br />
        Your name:<input type="text" id="txtUserName" value="陈浩南" /><br />
        Your age:<input type="text" id="txtAge" value="28" /><br />
        Wait Time:<input type="text" id="txtWaitTimes" value="1000" /><br />
        <input type="button" id="btnGif" runat="server" value="提交显示Gif等待框" onclick="waitGif();" />
    </div>
    </form>
</body>
</html>

AjaxPage.aspx.cs

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Threading;

    public partial class AjaxPage : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            int times = 0;
            int.TryParse(Request.QueryString["times"] + string.Empty, out times);
            Thread.Sleep(times);
            Response.Write("<br>Your name : " + Request.QueryString["name"] + string.Empty);
            Response.Write("<br>Your Age : " + Request.QueryString["age"] + string.Empty);
            Response.Flush();
        }
    }

注意：

1..应用程序名不能有汉字