New file |
| | |
| | | 'use strict' |
| | | |
| | | /** |
| | | * 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 |
| | | */ |
| | | export default 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) |
| | | } |