| ; | |
| /** | |
| * Determines whether the specified URL is absolute | |
| * | |
| * @param {string} url The URL to test | |
| * @returns {boolean} True if the specified URL is absolute, otherwise false | |
| */ | |
| module.exports = function isAbsoluteURL(url) { | |
| // A URL is considered absolute if it begins with "<scheme>://" or "//" (protocol-relative URL). | |
| // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed | |
| // by any combination of letters, digits, plus, period, or hyphen. | |
| return /^([a-z][a-z\d\+\-\.]*:)?\/\//i.test(url); | |
| }; | |