asp.net后台编写 loading效果

最新推荐文章于 2023-01-10 09:56:53 发布

转载最新推荐文章于 2023-01-10 09:56:53 发布 · 234 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/ganmk/archive/2008/05/26/1207832.html

文章标签：

#c# #javascript #ViewUI

本文介绍了一种使用JavaScript和HTML实现页面加载中效果的方法。通过定时器控制进度条的显示长度来模拟加载进度，并在页面加载完成后清除定时器并隐藏加载提示。

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使用方法：
protected void Page_Load(object sender, EventArgs e)
        {
            initJavascript();
            FillCheckBox();
           UnloadJavascript();
        }

"页面加载中效果"#region "页面加载中效果"

/**//// <summary>

/// 页面加载中效果

/// </summary>

public static void initJavascript()

{

HttpContext.Current.Response.Write(" <script language=JavaScript type=text/javascript>");

HttpContext.Current.Response.Write("var t_id = setInterval(animate,20);");

HttpContext.Current.Response.Write("var pos=0;var dir=2;var len=0;");

HttpContext.Current.Response.Write("function animate(){");

HttpContext.Current.Response.Write("var elem = document.getElementById('progress');");

HttpContext.Current.Response.Write("if(elem != null) {");

HttpContext.Current.Response.Write("if (pos==0) len += dir;");

HttpContext.Current.Response.Write("if (len>32 || pos>79) pos += dir;");

HttpContext.Current.Response.Write("if (pos>79) len -= dir;");

HttpContext.Current.Response.Write(" if (pos>79 && len==0) pos=0;");

HttpContext.Current.Response.Write("elem.style.left = pos;");

HttpContext.Current.Response.Write("elem.style.width = len;");

HttpContext.Current.Response.Write("}}");

HttpContext.Current.Response.Write("function remove_loading() {");

HttpContext.Current.Response.Write(" this.clearInterval(t_id);");

HttpContext.Current.Response.Write("var targelem = document.getElementById('loader_container');");

HttpContext.Current.Response.Write("targelem.style.display='none';");

HttpContext.Current.Response.Write("targelem.style.visibility='hidden';");

HttpContext.Current.Response.Write("}");

HttpContext.Current.Response.Write("</script>");

HttpContext.Current.Response.Write("<style>");

HttpContext.Current.Response.Write("#loader_container {text-align:center; position:absolute; top:40%; width:100%; left: 0;}");

HttpContext.Current.Response.Write("#loader {font-family:Tahoma, Helvetica, sans; font-size:11.5px; color:#000000; background-color:#FFFFFF; padding:10px 0 16px 0; margin:0 auto; display:block; width:130px; border:1px solid #5a667b; text-align:left; z-index:2;}");

HttpContext.Current.Response.Write("#progress {height:5px; font-size:1px; width:1px; position:relative; top:1px; left:0px; background-color:#8894a8;}");

HttpContext.Current.Response.Write("#loader_bg {background-color:#e4e7eb; position:relative; top:8px; left:8px; height:7px; width:113px; font-size:1px;}");

HttpContext.Current.Response.Write("</style>");

HttpContext.Current.Response.Write("<div id=loader_container>");

HttpContext.Current.Response.Write("<div id=loader>");

HttpContext.Current.Response.Write("<div align=center>页面正在加载中

</div>");

HttpContext.Current.Response.Write("<div id=loader_bg><div id=progress> </div></div>");

HttpContext.Current.Response.Write("</div></div>");

HttpContext.Current.Response.Flush();

}

public static void UnloadJavascript()

{

HttpContext.Current.Response.Write(" <script language=JavaScript type=text/javascript>");