用mui.ajax从后台获取到的data怎么赋值给全局变量

Question

page_num={};
mui.ajax('src/api/json/1.json',{

                data:{
                    page_number:'page_number',
                    total_number:'total_number',
                    jobs:'jobs'
                },
                dataType:'json',//服务器返回json格式数据
                type:'get',//HTTP请求类型
                timeout:10000,//超时时间设置为10秒；
                success:function(data){
                    page_num=data;
                    
                },
});