为什么 IE10 加载较旧的 IE 版本样式表

Question

我有以下javascript：

    <script  type="text/javascript">
        var isMobile = {
            Android: function () {
                return navigator.userAgent.match(/Android/i);
            },
            BlackBerry: function () {
                return navigator.userAgent.match(/BlackBerry/i);
            },
            iOS: function () {
                return navigator.userAgent.match(/iPhone|iPad|iPod/i);
            },
            Opera: function () {
                return navigator.userAgent.match(/Opera Mini/i);
            },
            Windows: function () {
                return navigator.userAgent.match(/IEMobile/i);
            },
            any: function () {
                return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Opera() || isMobile.Windows());
            }
        };
        navigator.sayswho = (function () {
            var ua = navigator.userAgent, tem,
            M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=/))/?s*([d.]+)/i) || [];
            if (/trident/i.test(M[1])) {
                tem = /brv[ :]+(d+(.d+)?)/g.exec(ua) || [];
                return 'IE ' + (tem[1] || '');
            }
            M = M[2] ? [M[1], M[2]] : [navigator.appName, navigator.appVersion, '-?'];
            if ((tem = ua.match(/version/([.d]+)/i)) != null) M[2] = tem[1];
            return M.join(' ');
        })();
        var browserversion1 = navigator.sayswho.split(" ");
        var browserversion2 = browserversion1[1].split(".")[0].split(",");
        var isIeLessThan10 = (browserversion1[0] == "IE" || browserversion1[0] == "MSIE") && browserversion2[0] < 10
        //alert(isIeLessThan10);
        if (!isMobile.any()) {
            if (isIeLessThan10) {
                alert("IE<10");
                document.write('<link rel="stylesheet" href="theStyles/defaultStyle_ie.css" type="text/css" charset="utf-8" />');
                document.write('<link rel="stylesheet" href="theStyles/captionStyle_ie.css" type="text/css" charset="utf-8" />');
            }
            else {
                alert("IE>=10 || !IE");
                document.write('<link rel="stylesheet" href="theStyles/defaultStyle.css" type="text/css" charset="utf-8" />');
                document.write('<link rel="stylesheet" href="theStyles/captionStyle.css" type="text/css" charset="utf-8" />');
            }
        }
        else {
            alert("mobile");
            document.write('<link rel="stylesheet" href="theStyles/defaultStyle_mobile.css" type="text/css" charset="utf-8" />');
            document.write('<link rel="stylesheet" href="theStyles/captionStyle_mobile.css" type="text/css" charset="utf-8" />');
        }
</script>

上面的脚本检查浏览器是移动浏览器还是全功能浏览器。如果是全功能浏览器，请检查IE版本是否小于10，如果是，则加载defaultStyle_ie.css样式表，否则如果是IE10或更高版本或任何其他浏览器加载样式表defaultStyle.css。一切都在FireFox，Chrome和IE8中正常工作。当我在IE10中加载页面时，IE8版本样式表正在加载。我该如何解决这个问题？

Answer 1

根据我的评论，加载正常的样式表。

然后在移动设备中添加媒体条件。

然后加载IE9或更少的样式表

<!-- default stylesheets -->
<link rel="stylesheet" type="text/css" href="theStyles/defaultStyle.css">
<link rel="stylesheet" type="text/css" href="theStyles/captionStyle.css">
<!-- mobile stylesheets -->
<link rel="stylesheet" type="text/css" href="theStyles/defaultStyle_mobile.css" media='screen and (max-device-width: 480px)'>
<link rel="stylesheet" type="text/css" href="theStyles/captionStyle_mobile.css" media='screen and (max-device-width: 480px)'>
<!-- if ie version 9 or less -->
<!--[if lte IE 9]>
<link rel="stylesheet" type="text/css" href="theStyles/defaultStyle_ie.css">
<link rel="stylesheet" type="text/css" href="theStyles/captionStyle_ie.css">
<![endif]-->

Answer 2

问题是您在IE中处于兼容模式，然后发送旧版本。您可以通过按 F12 在开发控制台中检查模式