<base href="http://www.a.com/">
网页地址:http://www.a.com/b
js跳转:window.location.href = 'c/d'
ie跳转到了http://www.a.com/b/c/d
取base值拼接
<base href="http://www.a.com/">
网页地址:http://www.a.com/b
js跳转:window.location.href = 'c/d'
ie跳转到了http://www.a.com/b/c/d
取base值拼接