Created
December 19, 2015 12:31
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Count selectors CSS
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| function countCSSRules() { | |
| var results = '', | |
| log = ''; | |
| if (!document.styleSheets) { | |
| return; | |
| } | |
| for (var i = 0; i < document.styleSheets.length; i++) { | |
| countSheet(document.styleSheets[i]); | |
| } | |
| function countSheet(sheet) { | |
| var count = 0; | |
| if (sheet && sheet.cssRules) { | |
| for (var j = 0, l = sheet.cssRules.length; j < l; j++) { | |
| var rule = sheet.cssRules[j]; | |
| if (rule instanceof CSSImportRule) { | |
| countSheet(rule.styleSheet); | |
| } | |
| if( !rule.selectorText ) { | |
| continue; | |
| } | |
| count += rule.selectorText.split(',').length; | |
| } | |
| log += '\nFile: ' + (sheet.href ? sheet.href : 'inline <style> tag'); | |
| log += '\nRules: ' + sheet.cssRules.length; | |
| log += '\nSelectors: ' + count; | |
| log += '\n--------------------------'; | |
| if (count >= 4096) { | |
| results += '\n********************************\nWARNING:\n There are ' + count + ' CSS rules in the stylesheet ' + sheet.href + ' - IE will ignore the last ' + (count - 4096) + ' rules!\n'; | |
| } | |
| } | |
| } | |
| console.log(log); | |
| console.log(results); | |
| }; | |
| countCSSRules(); |
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