短信验证码获取JS

HTML代码： 

获取验证码

JS代码：

    //获取短信验证码
    var countDown = 60;
    function getNoteCode(val) {
        var phone = $("input[name='cellphone']").val();
        if (phone == "" || phone == null) {
            layer.msg("请输入正确的手机号")
        } else {
            $.ajax({
                url: "/Total/LittleBackground/ChangeCode",
                data: { phone: phone },
                success: function (res) {
                    if (res.Code == 101) {
                        var newCode = setInterval(function () {
                            $(val).attr("class", "layui-btn layui-btn-fluid layui-btn-disabled");
                            $(val).attr("disabled", "disabled");
                            //val.setAttribute("disabled", true);
                            $(val).text( "重新发送(" + countDown + ")" );
                            countDown--;
                            if (countDown == 0) {
                                window.clearInterval(newCode);
                                val.removeAttribute("disabled");
                                $(val).attr("class", "layui-btn layui-btn-fluid");
                                $(val).text( "获取验证码");
                                countDown = 60;
                            }
                        }, 1000);
                    } else {
                        layer.msg(res.Msg);
                    }
                }
            });
        }
    }