mirror of https://github.com/jkjoy/sunpeiwen.git
26 lines
555 B
JavaScript
26 lines
555 B
JavaScript
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var utils = require('../utils');
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/**
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* Returns true if the given selector exists.
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*
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* @param {String} sel
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* @return {Boolean}
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* @api public
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*/
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function selectorExists(sel) {
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utils.assertString(sel, 'selector');
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if (!this.__selectorsMap__) {
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var Normalizer = require('../visitor/normalizer')
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, visitor = new Normalizer(this.root.clone());
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visitor.visit(visitor.root);
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this.__selectorsMap__ = visitor.map;
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}
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return sel.string in this.__selectorsMap__;
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}
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selectorExists.params = ['sel'];
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module.exports = selectorExists;
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