Slim template engine syntax for [if lt IE 9

问题

I use slim as view template engine http://slim-lang.com/

How would you write the following piece of code with slim?

thanks

<!--[if lt IE 9]>
        <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->

回答1:

It should use /!

/![if lt IE 9]><script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script><![endif]

回答2:

Looking through the documentation github-slim-template/slim I found:

IE conditional comment /[...]

/[if IE]
  p Get a better browser.

renders as

<!--[if IE]><p>Get a better browser.</p><![endif]-->

In your case you could write:

/[if lt IE 9]
  script src="http://html5shim.googlecode.com/svn/trunk/html5.js"  

回答3:

Looking at Slim's source code for Slim::Parser, it seems that you can do it this way, although I haven't tried.

/[if lt IE 9]
  <script src='http://html5shim.googlecode.com/svn/trunk/html5.js'></script>

回答4:

I ran across this question searching for a method to do both downlevel-reveal and downlevel-hidden conditionals in Slim.

First make sure you are clear on the difference between these two types of conditionals. CSS-Tricks has a great post about downlevel-hidden and downlevel-reveal conditionals.

This code creates a downlevel-hidden conditional.

/[if lt IE 9]
  ...

But if you want a downlevel-reveal conditional you need to just write it as you would if you were not working in slim.

<!--[if lt IE 9]><!--> ... <!--<![endif]-->

I encountered this issue while trying to use HTML5 Boilerplate in Slim. This Gist shows my approach to the issue.

If slim has a syntax for writing downlevel-reveal conditionals I am not aware of it.

来源：https://stackoverflow.com/questions/6808935/slim-template-engine-syntax-for-if-lt-ie-9