var jsonData =

            [{"subnetId":,"subnetNode":-,"subnetRemark":"状态自带","subnetName":"中心网络"},

                {"subnetId":,"subnetNode":,"subnetRemark":"好好的","subnetName":"北京"},

                {"subnetId":,"subnetNode":,"subnetRemark":"大唐电信","subnetName":"大唐电信"},

                {"subnetId":,"subnetNode":,"subnetRemark":"","subnetName":"上海"},

                {"subnetId":,"subnetNode":,"subnetRemark":"","subnetName":"中国联通"},

                {"subnetId":,"subnetNode":,"subnetRemark":"","subnetName":"移动"},

                {"subnetId":,"subnetNode":,"subnetRemark":"","subnetName":"你好"}];

 function show(data,node){

        var ul = "<ul>";

        for(var i=;i<data.length;i++){

           if(data[i]!=null){

               if(data[i].subnetNode==node){

                   ul += "<li style='margin-left:10px;'>"+data[i].subnetName;

                   ul += show(data,data[i].subnetId);

                   ul += "</li>";

               }

           }

        }

        ul+="</ul>";

        return ul;

    }

    var a = show(jsonData,-);

    console.log(a);

    var div = document.createElement(div);

    div.innerHTML = a;

    document.body.appendChild(div);