正则验证一个URL是否符合规范 密码是否符合规范

检查URL

let str = "https://www.baidu.com/s?wd=%E6%8E%98%E9%87%91&rsv_spt=1&E%2598%25E9%2587%2591&rsp=0";
let reg = /^(?:(http|https|ftp):\/\/)?((?:[\w-]+\.)+[a-z0-9]+)((?:\/[^/?#]*)+)?(\?[^#]+)?(#.+)?$/i;
console.log(reg.exec(str));

URL格式

• 1.协议: /^(?:(http|https|ftp):\/\/)?
• 2.域名:((?:[\w-]+\.)+[a-z0-9]+)
• 3.请求路径/ /index.html /stu/index.html /stu ((?:\/[^/?#]*)+)?
• 4.问号传参 ?xxx=xxx&xxx=xxx (\?[^#]+)?
• 5.哈希值#xxx (#.+)?$/i;

检查密码

密码包含大小写字母加数字,长度6-16

let reg = /(?!^[a-zA-Z]+$)(?!^[A-Z0-9]+$)(?!^[a-z0-9]+$)^[a-zA-Z0-9]{6,16}$/;