var obj = [
{id:1,value:"一",parentid:1},
{id:2,value:"一",parentid:1},
{id:3,value:"一",parentid:2},
{id:4,value:"一",parentid:1},
{id:5,value:"一",parentid:3},
{id:6,value:"一",parentid:2},
];
function ceshi(){
var data = new Object();
var parentids = new Array();//所有父节点
for(var i=0;i<obj.length;i++){
data[obj[i].id] =obj[i];
if(obj[i].parentid && parentids.indexOf(obj[i].parentid)==-1){
parentids.push(obj[i].parentid);
}
}
var rootids=new Array();//主节点
for(var i=0;i<obj.length;i++){
obj[i].status = "close";
if(parentids.indexOf(obj[i].id)==-1){
obj[i].status = "open";
}
if(obj[i].id!=obj[i].parentid && obj[i].parentid){
if(data[obj[i].parentid].children){
data[obj[i].parentid].children.push(obj[i]);
}else{
data[obj[i].parentid].children = [obj[i]];
}
}else{
rootids.push(obj[i].id);
}
}
var back = new Array();
for(var i=0;i<rootids.length;i++){
back.push(data[rootids[i]]);
}
return back;
}
利用了object的指针属性
