Recursive iteration over dynamically nested object array

Question

I am using angular JS and one of their examples:http://jsfiddle.net/furf/EJGHX/

I need to take the data when the update function occurs and add some values to it bef

Answer 1

If I'm understanding you correctly, you want each 'child' to have a parentID (defined by its parent; 0 otherwise) and an index (based on its position within it sibling set).

function normalize(parent) {
    if (parent && parent.children) {
        for (var i = 0, l = parent.children.length; i < l; ++i) {
            var child = parent.children[i];
            child.index = i;
            if (!child.parentId) child.parentId = parent.id || '0';
            normalize(child);
        }
    }
}

normalize(data);