Split your CSS into logical, small files and load them as needed
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Split your CSS into logical, small files

csSPLIT.js allows you to split your CSS into small, logical files. Every file holds one declaration and is named exactly the same.

Let's say you want to add a class like .my_super-bada55-cl4s5. The file for this would be called my_super-bada55-cl4s5.css - easy as that! Once the script finds your class name in the DOM it will create a new link element containing a link to assets/css/my_super-bada55-cl4s5.css. Awesome!

This works for all pages, so you'll always get exactly the styles you need - no more, no less.


Step 1: Include the script

Include the script (Best Practice: Inline the minified version from cssplit.min.js);

  <!-- ALL YOUR DOM HERE -->
<script type="text/javascript">
!function(a,b){var d=b.querySelectorAll("*"),e=b.querySelector("head"),f=[],g=[],h="assets/css/";!function(a){[].forEach.call(a,function(a){""!==a.classList.toString()&&a.classList.toString().split(" ").forEach(function(a){f.push(a)})})}(d);var i=function(a){var c=b.createElement("link");c.rel="stylesheet",c.href=h+a,e.appendChild(c)},j=function(a){return a+".css"};f.forEach(function(a){g.push(j(a))}),g.forEach(function(a){i(a)})}(window,document);

Step 2: Create the CSS files!

Next, split your CSS in thousands of files and place them in the assets/css directory.

Step 3: ????

Step 4: Profit!

Your CSS is now automatically loaded. csSPLIT.js is written as immediately Invoked Function Expression, that is, it is calling itself!

Made with love by 🐮💩 ~ 2015