example json
{ id: “1”, value: “one”, open: true, “icon”: “help.gif”, key: “_2”, data: [
{
id: 2,
value: “house”,
data: [
{
id: 3,
value: “house2”,
“icon”: “help.gif”,
data: [
{
id: 4,
value: “house3”,
data: [
{
id: 5,
value: “house4”,
“icon”: “help.gif”,
data: [
{
id: 6,
value: “result”,
“icon”: “idea.gif”,
“key”: “_7”
},
at the "id: 6 " there is still key field
how to set the icon of the field “icon” only for branches that have the field “key”