树遍历操作

gistfile1.txt

var id = 1;
(function loop (children) {
  var nextChildren = [];
  _.map(children, function (child) {
    child.uid = child.name + '-' + id;
    if (child.children && child.children.length > 0) {
      nextChildren = nextChildren.concat(child.children);
    }
    id += 1;
  });
  
  if (nextChildren.length > 0) {
    loop(nextChildren);
  }
})(tree.children);