正則短例

驗證微信ID:

var reg = /^[a-zA-Z][0-9a-zA-Z_-]{5,19}$/   

驗證手機號：

/*
* 判斷字符串是否符合手機號碼格式
* 移動號段: 134,135,136,137,138,139,147,150,151,152,157,158,159,170,178,182,183,184,187,188
* 聯通號段: 130,131,132,145,155,156,170,171,175,176,185,186
* 電信號段: 133,149,153,170,173,177,180,181,189
*/

let phoneNumReg = /^((13[0-9])|(14[5,7,9])|(15[^4])|(18[0-9])|(17[0,1,3,5,6,7,8]))\d{8}$/;

驗證qq:

規則5~10位純數字

首位非0

let qqReg = /^[1-9]\d{4,9}$/;

 1-7位大寫字母

let reg = /^[A-Z]{1,7}$/;

 0 或者非0開頭的純數字

/^(0|[1-9][0-9]*)$/;