Avoid CSS expressions

Question

I understand what a CSS expression is, YSlow is reporting that my page is using one:

Grade B on Avoid CSS expressions

There are a total of 1 expression

    inline <style> tag #3 (1 expression)

However, I cannot find where this is coming from? I tried searching all my files for the word "expression" (trying to find the expression() function) and am coming up blank. Is there anything else that YSlow could be considering a css expression that I am missing?

score 2 · Accepted Answer · 2012-06-27T15:43:10.823

2

YSlow claims that you have an inline style, so at least it is not from a css file. If you can't find the <style> in your own html, something else is adding this to your code.

This could maybe an external JavaScript, or maybe it comes from an browser extension you added, e.g a developer tool.

In your browser debug console type document.getElementsByTagName("style") to list all <style> in your generated document

edited Jun 27 '12 at 15:43

answered Jun 27 '12 at 15:34

Found it, the all.js file that facebook puts on your page is using an expression. Thanks for the troubleshooting tip! – Jason Jun 27 '12 at 16:06

Avoid CSS expressions

1 Answers1