js-Bom对象
1.实例：
<!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>运行代码</title>
<script>
window.onload=function ()
{
var oTxt=document.getElementById('txt1');
var oBtn=document.getElementById('btn1');
oBtn.onclick=function ()
{
var oNewWin=window.open('about:blank'); //打开新页面
oNewWin.document.write(oTxt.value); //在新页面上输出
};
};
</script>
</head>
<body>
<textarea id="txt1" rows="10" cols="40"></textarea><br />
<input id="btn1" type="button" value="运行" />
</body>
</html>
2.window.location='http://www.miaov.com/' 打开一个新链接
3.查看浏览器类型 alert(window.navigator.userAgent);
