脚本说明: function do_totals1() { document.all.pleasewaitScreen.style.pixelTop = (document.body.scrollTop + 50); document.all.pleasewaitScreen.style.visibility="visible"; window.setTimeout('do_totals2()',1); } function do_totals2() { lengthy_calculation(); document.all.pleasewaitScreen.style.visibility="hidden"; } function lengthy_calculation() { var x,y for(x=0;x<1000000;x++) { y += (x * y) / (y - x); } }
把如下代码加入<body>区域中
<script language="javascript">
</script>
<DIV ID="pleasewaitScreen" STYLE="position:absolute;z-index:5;top:30%;left:42%;visibility:hidden">
<TABLE BGCOLOR="#000000" BORDER="1" BORDERCOLOR="#000000" CELLPADDING="0" CELLSPACING="0" HEIGHT="100" WIDTH="150" ID="Table1">
<TR>
<TD WIDTH="100%" HEIGHT="100%" BGCOLOR="silver" ALIGN="CENTER" VALIGN="MIDDLE">
<FONT FACE="Arial" SIZE="4" COLOR="blue"><B>正在处理中<br>
请稍等...</B></FONT>
</TD>
</TR>
</TABLE>
</DIV>
<p align="center">
<input type="button" name="btn_calc" value="处理等待" onclick="do_totals1()">
</p>
