//正则表达式...
var rexg2 = /([a-z0-9]*[-_\.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[\.][a-z]{2,3}([\.][a-z]{2})?/i; var rexg3 = /^(?!\d+$)[\da-zA-Z]*$/; var rexg4 = /[`~!#$%^&*()_+<>?:"{},\/;‘[\]]/im; var rexg5 = /^[^@]*@[^@]*$/;
原文：https://www.cnblogs.com/bycnboy/p/9208171.html