email驗證

/** * email格式校验 * @param {Object} email 邮件地址内容 */function emailFormatCheck(email){    if ((email.length > 128) || (email.length < 6)) {        return false;    }    var format = /^[A-Za-z0-9+]+[A-Za-z0-9\.\_\-+]*@([A-Za-z0-9\-]+\.)+[A-Za-z0-9]+$/;    if (!email.match(format)) {        return false;    }    return true;}