The length of an array does not update

Question

In giving console in a array, with an object(1), and lenght from it is obtained the expected return, then update the value of the array, adding a new position, give console in the array and the return says that there are two objects in the array and then to give console in the lenght of him is returned to me as if there were only one object.

Because the console does not return the correct array size when given console right in the length, but returns the right amount when the return is itself array?

Context

This algorithm was to calculate the best distance between several points. The function itself (minus distance) should receive the routes, which is an object with the routes that have not yet been defined, and exclude is an object with the routes that should be removed from the new route because they have already been used.

Update 18/05/2018 I updated the code in order to simplify it and find this problem, which until then, is unsolved.

Project: https://jsfiddle.net/anndreyy/wbzbgj0z/3/

Answer 1

If you want to add items to exclude, change the destination variable to exclude.push(rotas.destinos[i]);

for (let i in rotas.destinos) {
    for (let j in exclude) {
        if (exclude[j].destino != rotas.destinos[i].destino) {
            exclude.push(rotas.destinos[i]);
        }
    }
}

There are some useful references here: https://stackoverflow.com/questions/1584370/how-to-merge-two-arrays-in-javascript-and-de-duplicate-items