网页默认浏览器以IE那个版本查看
1.第一种方式
页面上添加meta标签
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8" />
<meta http-equiv="X-UA-Compatible" content="IE=7" />
2.第二种就在web.config 设置
<system.webServer>
<httpProtocol>
<customHeaders>
<clear />
<add name="X-UA-Compatible" value="IE=EmulateIE8" />
</customHeaders>
</httpProtocol>
</system.webServer>