import defined from './defined.js';
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var a;
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/**
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* Given a URL, determine whether that URL is considered cross-origin to the current page.
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*
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* @private
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*/
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function isCrossOriginUrl(url) {
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if (!defined(a)) {
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a = document.createElement('a');
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}
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// copy window location into the anchor to get consistent results
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// when the port is default for the protocol (e.g. 80 for HTTP)
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a.href = window.location.href;
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// host includes both hostname and port if the port is not standard
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var host = a.host;
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var protocol = a.protocol;
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a.href = url;
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// IE only absolutizes href on get, not set
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a.href = a.href; // eslint-disable-line no-self-assign
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return protocol !== a.protocol || host !== a.host;
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}
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export default isCrossOriginUrl;
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