JS print

<input id="btnPrint" type="button" value="打印" onclick="javascript:window.print();" />

<input id="btnPrint" type="button" value="打印预览" onclick=preview(1) />
<style type="text/css" media=print>
.noprint{display : none }
</style>


<p class="noprint">不需要打印的地方</p>

<script>
function preview(oper)       
{
if (oper < 10)
{
bdhtml=window.document.body.innerHTML;//获取当前页的html代码
sprnstr="<!--startprint"+oper+"-->";//设置打印开始区域
eprnstr="<!--endprint"+oper+"-->";//设置打印结束区域
prnhtml=bdhtml.substring(bdhtml.indexOf(sprnstr)+18); //从开始代码向后取html

prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));//从结束代码向前取html
window.document.body.innerHTML=prnhtml;
window.print();
window.document.body.innerHTML=bdhtml;
} else {
window.print();
}
}
</script>
<p>XXXXX</p>
<!--startprint1-->


<table border="1">
  <tr>
    <th>Month</th>
    <th>Savings</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
  </tr>
</table>


<!--endprint1-->

 

 

 

 http://www.iteye.com/topic/1114154