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返回页面上所有相对URL的基URL
<!DOCTYPE html >
<html>
<head>
<meta charset="utf-8">
<title>自学教程(如约智惠.com)</title>
<base id="htmldom" href="http://www.baidu.com"/>
</head>
<body >
<p>基础URL 是
<script>
document.write(document.getElementById('htmldom').href);
</script>
</p>
</body>
</html>
返回页面上所有相对链接的基链接
<!DOCTYPE html >
<html>
<head>
<meta charset="utf-8">
<title>自学教程(如约智惠.com)</title>
<base id="htmldom" target="_blank" href="http://www.baidu.com"/>
</head>
<body >
<p>基础URL 是
<script>
document.write(document.getElementById('htmldom').target);
</script>
</p>
</body>
</html>