短信验证码js

var isSmsSend = false;
    function clickButtona(obj){  

            var obj = $(obj);
            var mobile=$("input[name=mobile]").val();
            var URL1 = "{:url('member/index/getcode')}";
            if(isSmsSend == false){
                isSmsSend = true;
                $.ajax({
                url: URL1,
                type: 'post',
                data:{mobile:mobile},
                success: function(data) {

                     if(data.error>0){
                        isSmsSend = false;
                        layer.open({
                            content: data.msg
                            ,skin: 'msg'
                            ,time: 2 //2秒后自动关闭
                        });
                        return false;
                    }else{
                         layer.open({
                            content: "验证码已发送,请注意查收"
                            ,skin: 'msg'
                            ,time: 2 //2秒后自动关闭
                        });
                        obj.attr("disabled","disabled");/*按钮倒计时*/
                        var time = 60;
                        var set = setInterval(function(){
                            if(time >= 0){
                                obj.val(time+"(s)");
                            }else{
                                isSmsSend = false;
                                clearInterval(set);
                                obj.attr("disabled",false);
                                obj.val("重新发送");
                            }
                            time--;

                        }, 1000);/*等待时间*/  

                    }
                }
            });
            }

        }

原文地址：https://www.cnblogs.com/lalalagq/p/10203148.html