Count Objects In Array Big Data

hi how can i count how many objects are in this Object of arrays? In the children objects there are also Arrays with Objects. Dont really easy to understand... Hi looked at stackov

Solution 1:

Using ES2015:

const count = (item) => 1 + (item.children || []).map(count).reduce((a, b) => a + b, 0)

count(DATA) //=> 252

Solution 2:

Use recursion.

function countObjects(obj) {
    // the current element is an object +1
    count = 1;
    // check if object has children
    if (Array.isArray(obj.children)) {
        // loop through children
        obj.children.forEach(child => {
            // count # of objects within each child and tally
            count += countObjects(child)
        });
    }
    return count;
}

console.log(countObjects(DATA));

(I ended up with 252 which is the number of {)