js控制判断

var name = document.getElementById("name");
            var sta =  document.getElementById("status");

var ry1;
             var rey2;
             var sb;
             var lx;
             var fl;
             var jb;
             var zy;
             var cs;
             var hs;
             var pjhs;
$.ajax({
        type:'post',
        url:urltro,
        async:false,
        data:null,
        dataType:'json',
        success:function(data){
                var datas=eval(data);
                //$.each(datas,function(i){
               

                 //   });

              
                if(datas){
for(var j=0;j<datas.length;j++){
//alert(data[j].status);
           // alert(data[j].createTime);
ry1=data[j].bxlxr;
//alert(data[j].bxlxr);
rey2=data[j].XCCLR;
sb=data[j].relateResource;
lx=data[j].gzyelx;
fl=data[j].kind;
jb=data[j].gzdk;
zy=data[j].importance;
cs=data[j].outOfSla;
var name1 = document.getElementById("name1");
            var name2 =  document.getElementById("name2");
            var equipment =  document.getElementById("equipment");
            var lxt =  document.getElementById("lxt");
            var flt =  document.getElementById("flt");
            var jbt =  document.getElementById("jbt");
            var yxdt =  document.getElementById("yxdt");
            var slat =  document.getElementById("slat");
            var hst =  document.getElementById("hst");
            var evaltime =  document.getElementById("evaltime");
           if(ry1==""||ry1==null){
           ry1="未知";
            }
           if(rey2==""||rey2==null){
           rey2="未知";
            }
           if(sb==""||sb==null){
           sb="未知";
            }
           if(lx==""||lx==null){
           lx="未知";
            }
           if(fl==""||fl==null){
           fl="未知";
            }
           if(jb==""||jb==null){
           jb="未知";
            }
           if(zy==""||zy==null){
           zy="未知";
            }
           if(cs==""||cs==null){
           cs="未知";
            }
            var til=data[j].title;
            var stan=data[j].status;
            if(til==""||til==null){
            til="未知";
            }
           if(stan==""||stan==null){
           stan="未知";
            }
            name1.innerHTML +=ry1;
            name2.innerHTML +=rey2;
            equipment.innerHTML +=sb;
            lxt.innerHTML +=lx;
            flt.innerHTML +=fl;
            jbt.innerHTML +=jb;
            yxdt.innerHTML +=zy;
            slat.innerHTML +=cs;
            name.innerHTML +=til.substr(0,8);
            sta.innerHTML +=stan;
}
               
                    }
       
        },
        error:function(){
            //$.message("失败");
        }
});