3b75170862
- K4周日1900班第12课《花朵随心画》课评（梁境城、钟嘉逸、王睿意补课） - AICODE03/CSP03各班级第12课课评及班级总结 - 更新多班级学生画像 - 课评生成技能优化
20 lines
617 B
JavaScript
20 lines
617 B
JavaScript
'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.
|
|
if (typeof url !== 'string') {
|
|
return false;
|
|
}
|
|
|
|
return /^([a-z][a-z\d+\-.]*:)?\/\//i.test(url);
|
|
}
|