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    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/cssom package

    0.4.4 • Public • Published


    CSSOM.js is a CSS parser written in pure JavaScript. It is also a partial implementation of CSS Object Model.

    CSSOM.parse("body {color: black}")
    -> {
      cssRules: [
          selectorText: "body",
          style: {
            0: "color",
            color: "black",
            length: 1

    Parser demo

    Works well in Google Chrome 6+, Safari 5+, Firefox 3.6+, Opera 10.63+. Doesn't work in IE < 9 because of unsupported getters/setters.

    To use CSSOM.js in the browser you might want to build a one-file version that exposes a single CSSOM global variable:

    ➤ git clone
    ➤ cd CSSOM
    ➤ node build.js
    build/CSSOM.js is done

    To use it with Node.js or any other CommonJS loader:

    ➤ npm install cssom

    Don’t use it if...

    You parse CSS to mungle, minify or reformat code like this:

    div {
      background: gray;
      background: linear-gradient(to bottomwhite 0%black 100%);

    This pattern is often used to give browsers that don’t understand linear gradients a fallback solution (e.g. gray color in the example). In CSSOM, background: gray gets overwritten. It doesn't get preserved.

    If you do CSS mungling, minification, image inlining, and such, CSSOM.js is no good for you, considere using one of the following:


    To run tests locally:

    ➤ git submodule init
    ➤ git submodule update

    Who uses CSSOM.js


    npm i cssom

    DownloadsWeekly Downloads






    Unpacked Size

    48.7 kB

    Total Files


    Last publish


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