我们知道，默认情况下，通过IE的打印对话框，打印出来的内容都有页眉和页脚的。如下
这是IE浏览器默认的页面打印设置。要想去除掉这个设置，首先可以通过手工地修改下面这个对话框来实现
但是，如果用户就是不想自己去修改，则可以通过下面的脚本强制进行修改
var hkey_root,hkey_path,hkey_key
hkey_root="HKEY_CURRENT_USER"
hkey_path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\"
//设置网页打印的页眉页脚为空
function pagesetup_null(){
try{
var RegWsh = new ActiveXObject("WScript.Shell")
hkey_key="header"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"")
hkey_key="footer"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"")
}catch(e){}
}
这一招有些狠，它是去修改注册表。所以一般都会弹出一个对话框
如果点击了“是”，那么如你所愿，现在页眉和页脚都没有了
接下来，如果说我们需要恢复呢？
//设置网页打印的页眉页脚为默认值
function pagesetup_default(){
try{
var RegWsh = new ActiveXObject("WScript.Shell")
hkey_key="header"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"&w&b页码，&p/&P")
hkey_key="footer"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"&u&b&d")
}catch(e){}
}
最后一个问题，怎么样通过脚本的方式去实现打印某个部分内容呢？
//打印某个内容
function PrintContent(el) {
var iframe = document.createElement('IFRAME');
var content=document.getElementById(el);
var doc = null;
iframe.style.position="absolute";
iframe.style.width="0px";
iframe.style.height="0px";
iframe.style.left="-500px";
iframe.style.top="-500px";
//$(iframe).attr('style', 'position:absolute;0px;height:0px;left:-500px;top:-500px;');
document.body.appendChild(iframe);
doc = iframe.contentWindow.document;
var links = window.document.getElementsByTagName('link');
for (var i = 0; i < links.length; i++)
if (links[i].rel.toLowerCase() == 'stylesheet')
doc.write('<link type="text/css" rel="stylesheet" href="' + links[i].href + '"></link>');
// doc.write('<div class="' + $(el).attr("class") + '">' + $(el).html() + '</div>');
doc.write('<div class="' + content.className + '">' + content.innerHTML + '</div>');
doc.close();
iframe.contentWindow.focus();
iframe.contentWindow.print();
document.body.removeChild(iframe);
}
整个测试页面的完整代码如下
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Personal Information</title>
</head>
<body>
<script language="javascript" type="text/javascript">
<!--
var hkey_root,hkey_path,hkey_key
hkey_root="HKEY_CURRENT_USER"
hkey_path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\"
//设置网页打印的页眉页脚为空
function pagesetup_null(){
try{
var RegWsh = new ActiveXObject("WScript.Shell")
hkey_key="header"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"")
hkey_key="footer"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"")
}catch(e){}
}
//设置网页打印的页眉页脚为默认值
function pagesetup_default(){
try{
var RegWsh = new ActiveXObject("WScript.Shell")
hkey_key="header"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"&w&b页码，&p/&P")
hkey_key="footer"
RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"&u&b&d")
}catch(e){}
}
//打印某个内容
function PrintContent(el) {
var iframe = document.createElement('IFRAME');
var content=document.getElementById(el);
var doc = null;
iframe.style.position="absolute";
iframe.style.width="0px";
iframe.style.height="0px";
iframe.style.left="-500px";
iframe.style.top="-500px";
//$(iframe).attr('style', 'position:absolute;0px;height:0px;left:-500px;top:-500px;');
document.body.appendChild(iframe);
doc = iframe.contentWindow.document;
var links = window.document.getElementsByTagName('link');
for (var i = 0; i < links.length; i++)
if (links[i].rel.toLowerCase() == 'stylesheet')
doc.write('<link type="text/css" rel="stylesheet" href="' + links[i].href + '"></link>');
// doc.write('<div class="' + $(el).attr("class") + '">' + $(el).html() + '</div>');
doc.write('<div class="' + content.className + '">' + content.innerHTML + '</div>');
doc.close();
iframe.contentWindow.focus();
iframe.contentWindow.print();
document.body.removeChild(iframe);
}
-->
</script>
<input type="button" value="清空页码" onclick="pagesetup_null()" />
<input type="button" value="恢复页码" onclick="pagesetup_default()" />
<input type="button" value="打印内容" onclick="PrintContent('contents')"/>
<div id="contents">
<table>
<thead>
<tr><td>姓名</td><td>年龄</td></tr>
</thead>
<tbody>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
<tr>
<td>陈希章</td>
<td>20</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>