49 lines
1.1 KiB
JavaScript
49 lines
1.1 KiB
JavaScript
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module.exports = function specificity(simpleSelector) {
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var A = 0;
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var B = 0;
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var C = 0;
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simpleSelector.sequence.each(function walk(data) {
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switch (data.type) {
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case 'SimpleSelector':
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case 'Negation':
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data.sequence.each(walk);
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break;
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case 'Id':
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A++;
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break;
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case 'Class':
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case 'Attribute':
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case 'FunctionalPseudo':
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B++;
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break;
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case 'Identifier':
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if (data.name !== '*') {
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C++;
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}
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break;
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case 'PseudoElement':
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C++;
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break;
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case 'PseudoClass':
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var name = data.name.toLowerCase();
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if (name === 'before' ||
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name === 'after' ||
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name === 'first-line' ||
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name === 'first-letter') {
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C++;
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} else {
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B++;
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}
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break;
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}
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});
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return [A, B, C];
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};
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