验证码
        $("#send_btn").click(function () {
            var email = $("input[ name='email' ]").val();
            if (email.length == 0) {
                layer.msg("请输入邮箱号", {icon: 2})
                return false;
            }
            var enoughRegex = new RegExp("[\\w!#$%&'*+/=?^_`{|}~-]+(?:\\.[\\w!#$%&'*+/=?^_`{|}~-]+)*@(?:[\\w](?:[\\w-]*[\\w])?\\.)+[\\w](?:[\\w-]*[\\w])?", "g");
            if (enoughRegex.test(email) == false) {
                layer.msg("请输入正确的�