为什么这些条件注释告诉我 IE8 是 IE7？

Question

为什么在 Internet Explorer 8 上使用此 HTML 页面：

<p>
<!--[if IE]> According to the conditional comment this is Internet Explorer<br /><!    [endif]-->
<!--[if IE 5]> According to the conditional comment this is Internet Explorer 5<br /> <![endif]-->
<!--[if IE 5.0]> According to the conditional comment this is Internet Explorer 5.0<br /> <![endif]-->
<!--[if IE 5.5]> According to the conditional comment this is Internet Explorer 5.5<br /> <![endif]-->
<!--[if IE 6]> According to the conditional comment this is Internet Explorer 6<br /> <![endif]-->
<!--[if IE 7]> According to the conditional comment this is Internet Explorer 7<br /> <![endif]-->
<!--[if gte IE 5]> According to the conditional comment this is Internet Explorer 5 and up<br /><![endif]-->
<!--[if lt IE 6]> According to the conditional comment this is Internet Explorer lower than 6<br /> <![endif]-->
<!--[if lte IE 5.5]> According to the conditional comment this is Internet Explorer lower or equal to 5.5<br /> <![endif]--> 
<!--[if gt IE 6]> According to the conditional comment this is Internet Explorer greater than 6<br /> <![endif]--> 
</p>

我得到此结果？

According to the conditional comment this is Internet Explorer
According to the conditional comment this is Internet Explorer 7
According to the conditional comment this is Internet Explorer 5 and up
According to the conditional comment this is Internet Explorer greater than 6

我不应该安装IE8吗？

谢谢。

Answer 1

唯一看起来不正确的评论

根据条件注释
这是 Internet Explorer 7

浏览器是否处于兼容模式，因为这会呈现为 IE7

Answer 2

对于本地文档，IE8倾向于自动使用IE7兼容模式。在这种情况下，IE8 的行为就像 IE7 一样（有一些怪癖）。

您要么在本地进行测试，要么您的浏览器当前设置为 IE7 兼容模式。