var tree = [
{ name: 'node1' },
{ name: 'node2', children: [{ name: 'node-2-1' }, { name: 'node2-2' }] },
{ name: 'node3', children: [{ name: 'node-3-1', children: [{ name: 'node3-1-1' }] }, { name: 'node3-2' }] }
];
var key = 'test'
function parseJson(arr) {
arr = arr.slice()
function toParse(arr) {
arr.forEach(function (item) {
if (item.children && Array.isArray(item.children)) {
item[key] = item.children
toParse(item[key])
}
delete item.children
})
return arr
}
return toParse(arr)
} console.log(parseJson(tree))