Modify A Javascript Object While Iterating Its Properties

Can javascript implement pass-by-reference techniques on function call? You see, I have the JSON below and I need to traverse all its node. While traversing, if the current item is

Solution 1:

Please check this one

var default_tree = [....] //Arrayfunctiontraverse(arrDefaultTree){
    arrDefaultTree.forEach(function(val,key){
         if(val.hasOwnProperty("nodes")){
            val.isParent = true;
            traverse(val.nodes);
         }
    }) 
}

traverse(default_tree);
console.log(default_tree);

Hope this helpful.

Solution 2:

With two functions, one that call then self. One find the nodes and the other one loop througgh the arrays.

traverseTree(default_tree);

functiontraverseTree (tree) {
  var i = 0, len = tree.length;
  for(;i < len; i++) {
    var obj = tree[i];
    findNodes(obj);
  }
}

functionfindNodes (obj) {
  var keys = Object.keys(obj);
  if (keys.indexOf('nodes') > -1) {
    obj.isParent = true;
    traverseTree(obj.nodes);
  }
}