35 lines
699 B
JavaScript
35 lines
699 B
JavaScript
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/**
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* Module exports.
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*/
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module.exports = dnsDomainIs;
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/**
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* Returns true iff the domain of hostname matches.
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*
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* Examples:
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*
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* ``` js
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* dnsDomainIs("www.netscape.com", ".netscape.com")
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* // is true.
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*
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* dnsDomainIs("www", ".netscape.com")
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* // is false.
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*
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* dnsDomainIs("www.mcom.com", ".netscape.com")
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* // is false.
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* ```
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*
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*
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* @param {String} host is the hostname from the URL.
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* @param {String} domain is the domain name to test the hostname against.
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* @return {Boolean} true iff the domain of the hostname matches.
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*/
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function dnsDomainIs (host, domain) {
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host = String(host);
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domain = String(domain);
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return host.substr(domain.length * -1) === domain;
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}
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