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    <p>I know this was asked almost a year ago, but I'm putting this answer up as a reference for the next poor sod who has this problem. There are probably better solutions out there, but this one is the only thing I could find/come up with.</p> <p>Since JavaScript doesn't seem to be able to get variables from any <code>.scss</code> file directly, we have to use regex to get the desired value from our file. But since we don't want to make it search though our entire SASS file:</p> <h2>Create a SASS file holding your variables</h2> <p>We create a new file, <code>_variables.scss</code>, for JavaScript to search through. Let's say it looks like this:</p> <pre><code>$menuMobileArrowRotate: 90; $articleScale: 1.1; </code></pre> <h2>Importing it to our main SASS file</h2> <p>Import it to SASS by adding <code>@import "variables";</code> near the top of our stylesheet. We can then use these variables throughout our file instead of manually entering values.</p> <h2>Importing it to JavaScript</h2> <p>I'm going to get JavaScript to read <code>_variables.scss</code> and turn it into a string:</p> <pre><code>var sassVariables = new XMLHttpRequest(); sassVariables.open("GET", 'http://www.use-absolute-url.com/_variables.scss', false); sassVariables.send(null); </code></pre> <p><em>Note: to support IE6 and earlier, replace <code>var xmlhttp = new XMLHttpRequest();</code> with:</em></p> <pre><code> if (window.XMLHttpRequest) { var sassVariables = new XMLHttpRequest(); } else { var sassVariables = new ActiveXObject("Microsoft.XMLHTTP"); } </code></pre> <p><a href="http://msdn.microsoft.com/en-us/library/ms537505%28v=vs.85%29.aspx" rel="nofollow">(Source)</a></p> <p>If I set asynch. to <code>true</code>, Firebug shows me an error claiming that <code>fileContent</code> doesn't exist. And since my file is only 4KB, I'm not going to worry too much about potential performance problems by having to wait for it to load.</p> <p>Now, I'm going to declare my variables:</p> <pre><code>var fileContent = sassVariables.responseText, //a string holding the contents of my file menuMobileArrowRotate = null, articleScale = null; </code></pre> <p>I declared <code>menuMobileArrowRotate</code> and <code>articleScale</code> before I made sure the file actually loaded, since I don't want JavaScript to give me an error and mess everything up just because it didn't load. </p> <p>If everything loads fine, I'm just going to use RegEx to find out the value of each of my variables. At least I'm only going through a tiny file instead of searching through my entire stylesheet.</p> <pre><code>if (sassVariables.status === 200) { //if everything loaded nice and dandy menuMobileArrowRotate = fileContent.match(/(?:menuMobileArrowRotate.\s*?)(\d+)/)[1]; articleScale = data.match(/(?:articleScale.\s*?)((\d+)\.*(\d+)*)/)[1]; } </code></pre> <p>Notice the <code>[1]</code> after <code>.match()</code>: RegEx returns an array, and I only want the first match (which, in my case, is also the only match).</p> <p>For all the JS put together: </p> <pre><code>if (window.XMLHttpRequest) { var sassVariables = new XMLHttpRequest(); } else { var sassVariables = new ActiveXObject("Microsoft.XMLHTTP"); } sassVariables.open("GET", 'http://mysite.com/sass/_variables.scss', false); sassVariables.send(null); var fileContent = sassVariables.responseText, menuMobileArrowRotate = null, articleScale = null; if (sassVariables.status === 200) { menuMobileArrowRotate = fileContent.match(/(?:menuMobileArrowRotate.\s*?)(\d+)/)[1]; articleScale = fileContent.match(/(?:articleScale.\s*?)((\d+)\.*(\d+)*)/)[1]; } console.log(menuMobileArrowRotate); //shows 90 console.log(articleScale); //shows 1.1 </code></pre> <p>I can now use these variables anywhere in my JavaScript file following this bit of code.</p> <h2>Bonus: media query variables</h2> <p>SASS doesn't let you use a variable <em>in</em> a media query. However, I can <a href="http://css-tricks.com/media-queries-sass-3-2-and-codekit/" rel="nofollow">make the whole dang query a mixin</a>, and put it in <code>_variables.scss</code>:</p> <pre><code>@mixin mediaQuery($point) { @if $point == 'mobile' { @media only screen and (max-width: 600px) { @content; } } @if $point == 'somethingElse' { @media only screen and (max-width: 1000px) { @content; } } } </code></pre> <p>In <code>style.scss</code>, I can have:</p> <pre><code>@include mediaQuery(mobile) { //blah } @include mediaQuery(somethingElse) { //blah } </code></pre> <p>I can then use the same process to get the desired values (i.e. 600 and 1000), just with different RegEx.</p>
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