flying-hero
96f6318101
新增: - backend/venv/ - Python 虚拟环境 - backend/start.sh - 启动脚本（使用虚拟环境） - backend/requirements.txt - 依赖列表 - .gitignore - 忽略虚拟环境和缓存文件 说明: - 每个项目使用独立虚拟环境 - 避免依赖冲突 - 启动脚本自动创建和激活虚拟环境
20 lines
617 B
JavaScript
20 lines
617 B
JavaScript
'use strict';
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/**
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* Determines whether the specified URL is absolute
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*
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* @param {string} url The URL to test
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*
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* @returns {boolean} True if the specified URL is absolute, otherwise false
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*/
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export default function isAbsoluteURL(url) {
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// A URL is considered absolute if it begins with "<scheme>://" or "//" (protocol-relative URL).
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// RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed
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// by any combination of letters, digits, plus, period, or hyphen.
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if (typeof url !== 'string') {
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return false;
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}
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return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url);
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}
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