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68 lines
2.0 KiB
Markdown
68 lines
2.0 KiB
Markdown
# CSSOM
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CSSOM.js is a CSS parser written in pure JavaScript. It is also a partial implementation of [CSS Object Model](http://dev.w3.org/csswg/cssom/).
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CSSOM.parse("body {color: black}")
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-> {
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cssRules: [
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{
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selectorText: "body",
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style: {
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0: "color",
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color: "black",
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length: 1
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}
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}
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]
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}
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## [Parser demo](http://nv.github.com/CSSOM/docs/parse.html)
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Works well in Google Chrome 6+, Safari 5+, Firefox 3.6+, Opera 10.63+.
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Doesn't work in IE < 9 because of unsupported getters/setters.
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To use CSSOM.js in the browser you might want to build a one-file version that exposes a single `CSSOM` global variable:
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➤ git clone https://github.com/NV/CSSOM.git
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➤ cd CSSOM
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➤ node build.js
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build/CSSOM.js is done
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To use it with Node.js or any other CommonJS loader:
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➤ npm install cssom
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## Don’t use it if...
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You parse CSS to mungle, minify or reformat code like this:
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```css
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div {
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background: gray;
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background: linear-gradient(to bottom, white 0%, black 100%);
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}
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```
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This pattern is often used to give browsers that don’t understand linear gradients a fallback solution (e.g. gray color in the example).
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In CSSOM, `background: gray` [gets overwritten](http://nv.github.io/CSSOM/docs/parse.html#css=div%20%7B%0A%20%20%20%20%20%20background%3A%20gray%3B%0A%20%20%20%20background%3A%20linear-gradient(to%20bottom%2C%20white%200%25%2C%20black%20100%25)%3B%0A%7D).
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It does **NOT** get preserved.
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If you do CSS mungling, minification, or image inlining, considere using one of the following:
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* [postcss](https://github.com/postcss/postcss)
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* [reworkcss/css](https://github.com/reworkcss/css)
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* [csso](https://github.com/css/csso)
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* [mensch](https://github.com/brettstimmerman/mensch)
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## [Tests](http://nv.github.com/CSSOM/spec/)
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To run tests locally:
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➤ git submodule init
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➤ git submodule update
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## [Who uses CSSOM.js](https://github.com/NV/CSSOM/wiki/Who-uses-CSSOM.js)
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