uview-plus/libs/luch-request/helpers/isAbsoluteURL.js

零云®uview-plus已兼容vue3支持多语言，120+全面的组件和便捷的工具会让您信手拈来。近期新增拖动排序、条码、图片裁剪、下拉刷新、虚拟列表、签名、Markdown等。

'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)
}