一.代码部分
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("<div id=loader_container><img src='images/ajaxloader.gif' /></div>"); HttpContext.Current.Response.Flush(); }
二.加载完毕隐藏窗口，<body onload="remove_loading();">
添加样式以便于显示合理#loader_container {text-align:center; position:absolute; top:40%; width:100%; left: 0;}