在HTML中使用条件注释 [英] Using conditional comments in HTML

问题描述

我对网络开发和学习总是比较陌生。我最近在查看不同网站的源代码时遇到条件注释。我想我现在明白他们做什么，但不确定何时使用它们。

I am relatively new to web development and learning all the time. I have recently come across 'Conditional Comments' when viewing source code for different websites. I think i now understand what they do but am unsure as to when to use them.

我看到他们主要用于实现不同的样式表，当谈到IE和想知道这是否是好的做法？

I have seen them mainly used for implementing different stylesheets when it comes to IE and would like to know if this is good practice?

在这种情况下，如果答案是是。然后，当开发网站是常见的地方使用两个单独的样式表来修复错误，例如为IE创建一个样式表，Firefox和Opera等？

In which case if the answer is 'Yes'. Then when developing a site is it 'common place' to use two separate stylesheets to fix bugs, for example create one stylesheet for IE and one for Firefox, Opera etc?

提前感谢。

推荐答案

条件式注释只有IE支持，据我所知，他们在浏览器中优雅地降级不支持他们（因为他们看起来像一个正常的评论）。一般的共识是，如果你使用它来打击另一个非标准的浏览器功能（即在IE中肮脏的CSS支持），使用非标准的浏览器功能是可以的。所以你会发现，这是一个非常常见的解决方案来调整CSS。

Conditional comments are only supported by IE, as far as I know, and they gracefully downgrade in browsers that don't support them (since they look like a normal comment). The general consensus is that it's OK to use a non-standard browser feature if you're using it to combat another non-standard browser "feature" (i.e. the crappy support for CSS in IE). So you'll find that it's a very common solution for tweaking CSS.

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