console 命令行工具 X clear

console

function printpage() {
  window.print();
}
function printdiv(printpage) {
  var headhtml = "<html><head><title>头部</title></head><body>";
  var foothtml = "</body>";
  //http://blog.csdn.net/guoquanyou/article/details/6371551
  var newhtml = document.all.item(printpage).innerHTML;
  var oldhtml = document.body.innerHTML;
  document.body.innerHTML = headhtml + newhtml + foothtml;
  window.print();
  document.body.innerHTML = oldhtml;
  return false;
}

<div id="div1">
</div>
<div id="div2">
</div>
<p>
  this is a paragraph.
</p>
<p>
  this is another paragraph.
</p>
<a href="#" onclick="printpage()">
  打印全部
</a>
<a href="#" onclick="printdiv('div1')">
  打印第一段
</a>
<a href="#" onclick="printdiv('div2')">
  打印第二段
</a>