Javascript recursion function returning undefined

Question

I\'m not even certain what the title of this question should be - I\'m not sure what is going wrong at all.

I\'m writing a function that simply loops through a binar

Answer 1

Your recursive call have to return the value to the caller

function searchLeft(node, path) {
    if (typeof node.left == 'undefined') {
        console.log(path);
        return path;
    }
    node = JSON.parse(JSON.stringify(node.left));
    path.push(node.data);
    return searchLeft(node, path); //here return
}