//删除JSON对象value值
var json=[.....];
delete(json['key']);
或者
delete(json.key);
//添加对象object
json.object=value;
或者
json['object']=value;

 function removeEmptyObject(object){
   for (var i in object) {
  var value = object[i];
  if (typeof value === 'object') {
   if (Array.isArray(value)) {
    if (value.length == 0) {
     delete object[i];
     continue;
    }
   }
   removeEmptyObject(value);
   //按需添加
   if (isEmpty(value)) {
    delete object[i];
   }
  } else {
   if (value === '' || value === null || value === undefined) {
    delete object[i];
   } else {
   }
  }
 }
 return object;
}
//是否为空
function isEmpty(object) {
 for (var name in object) {
  return false;
 }
 return true;
}

 function removeEmptyObject(object){
   for (var i in object) {
    var value = object[i];
    if (typeof value === 'object') {
     if (Array.isArray(value)) {
      if (value.length == 0) {
        //alert(object[i]);
       delete object[i];
       continue;
      }else{ 
        var a=[];
        if(i=='jobChildren'){
          for (var j = 0; j < object[i].length; j++) {
            a.push(object[i][j]);
          }
          delete object[i];
        }else if(i=='userChildren'){
          for (var j = 0; j < object[i].length; j++) {
            a.push(object[i][j]);
          }
          delete object[i]; 
        }else if(i=='deptChildren'){
          for (var j = 0; j < object[i].length; j++) {
            a.push(object[i][j]);
          }
          delete object[i]; 
        }else if(i=='companyChildren'){
          for (var j = 0; j < object[i].length; j++) {
            a.push(object[i][j]);
          }
          delete object[i]; 
        }else if(i=='jobDeptChildren'){
          for (var j = 0; j < object[i].length; j++) {
            a.push(object[i][j]);
          }
          delete object[i];
        }
        if(a.length>0&&object["children"]!=undefined){
          for (var k = 0; k < object["children"].length; k++) {
            a.push(object["children"][k]);
          }
          object["children"]=a;
        }else if(a.length>0 && object["children"]==undefined){
          object["children"]=a;
        } 
      }
     }
     removeEmptyObject(value);
     if (isEmpty(value)) {
      delete object[i];
     }
    } else {
     if (value === '' || value === null || value === undefined) {
      delete object[i];
     } else {
     }
    }
   }
  }
  function isEmpty(object) {
   for (var name in object) {
    return false;
   }
   return true;
  }