RWD for IE8 or earlier
//Detect Browser version and Support IE
if(Request.Browser.Type.ToUpper().Contains("IE")){
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<script src="~/Content/html5shiv/js/html5shiv.min.js"></script>
<script src="~/Content/respond/js/respond.min.js"></script>
}
HTML5Shiv : 讓IE9以前的瀏覽器支援HTML5元素
Respond : 另外一個必要的套件