Recursion in JavaScript

tree.js

var tree = {
    father: 'papa_0', mother: 'mama_0', children: [
        {
            father: 'papa_1_0', mother: 'mama_1_0', children: [
            {
                father: 'papa_2_0', mother: 'mama_2_0', children: [
                {
                    father: 'papa_3_0', mother: 'mama_3_0', children: []
                },
                {
                    father: 'papa_3_1', mother: 'mama_3_1', children: []
                },
                {
                    father: 'papa_3_2', mother: 'mama_3_2', children: []
                }
            ]
            }
        ]
        },
        {
            father: 'papa_1_1', mother: 'mama_1_1', children: []
        }
    ]
};

function getAllChildren(family) {
    if (family) {
        console.log('Parents: ', family.father, family.mother);
    }
    if (family.children.length) {
        family.children.forEach(getAllChildren);
    }
}

getAllChildren(tree);