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@silicakes
Created March 28, 2016 09:53
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get all interna, external and data URLs present inside a stylesheet
/**
* @description Returns all image/font/whatever URLs from all stylesheets present in the document
* @param styles {object|StyleSheetList} https://developer.mozilla.org/en-US/docs/Web/API/StyleSheetList
* @returns {array|string}
*/
function getURLsFromCSS(styles) {
var urls = [];
for (var x in styles) {
var style = styles[x];
var rules = style.rules;
for (var y in rules) {
var rule = rules[y];
var text = rule.cssText;
var match = text && text.match(/url\((.*?)\)/)
if (!!match) {
var url = match[1].replace(/('|")/g, '');
urls.push(url);
}
}
}
return urls;
}
//demo
var styles = window.document.styleSheets;
getURLsFromCSS(styles); // ["/images/spinners/octocat-spinner-64.gif","/images/modules/jobs/logo.png","http://example.com/images/modules/pulls/progressive-disclosure-line@2x.png", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAnsC7BpEAAAAABJRU5ErkJggg=="]
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