使用javascript修改title
1.这个在chrome中可以成功，在ie8中报错
<!DOCTYPE html>
<html>
<head>
<title id="title">我是标题</title>
<script type="text/javascript">
var title = document.getElementById('title');
title.innerText = "我是修改后的标题";
</script>
</head>
<body>
</body>
</html>
2.ie8中修改方法：
<!DOCTYPE html>
<html>
<head>
<title id="title">我是标题</title>
<script type="text/javascript">
document.title = "我是修改后的标题";
</script>
</head>
<body>
</body>
</html>
