js 正则验证多个邮箱，用；隔开的那种

var r = /^((([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6}\;))*(([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})))$/

var str = 'xxxx@126.com;123234234@qq.com;xxxxx@xxxxx.con.cn';
if (r.test(str))