这个CSS是否会产生额外的HTTP请求？

Question

I have a pretty simple question: I am using the filter property as a fallback in IE for background-size:cover, here's an example:

<div id="foo" style="
   background-image:url('image.png')
   filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='image.png', sizingMethod='scale');">
</div>

I have a doubt: would this generate extra HTTP requests?

Answer 1

不。据我所知，其他浏览器甚至不会查看filter属性，即使这样做， image.png也已经被获取并缓存了。