function addOne(){
            alert()
             var one=document.createElement("tr");
             table.appendChild(one);
             for(i=0;i<3;i++){
                 var td=document.createElement("td");
                 if(i!=2){  
                 td.innerHTML="果子";
             
                 
                 }else{
               
                     var de=document.createElement("a");
                     de.href="javascript:;";
                     de.onclick="deleteOne()";
                     td.appendChild(de);
                     td.innerHTML="删除"；
                 }
                 
                 one.appendChild(td); 
              
             }
         }