打印页面指定位置内容
下面是例子：这里输出打印的是<!--startprint-->与<!--endprint-->之间的内容
<html>
<script type="text/javascript" language="javascript" >
function execPrint(){
bdhtml = window.document.body.innerHTML;
sprnstr = "<!--startprint-->";
eprnstr = "<!--endprint-->";
prnhtml = bdhtml.substr(bdhtml.indexOf(sprnstr) + 17);
prnhtml = prnhtml.substring(0, prnhtml.indexOf(eprnstr));
window.document.body.innerHTML = prnhtml;
window.print();
}
</script>
<body>
<!--startprint-->
<h1>这里输出打印内容</h1>
<!--endprint-->
<h1>这里不打印</h1>
<input value="打印" type="button" onclick="execPrint()" /></body></html>
