Javascript update a dictionary according to list index

Question

I have a list which contains a team according to color:

var team = ["Red","Green","Blue","Yellow","Black","White","Orange"]
var from = 0
var to = 5
team.splice(to, 0, team.splice(from, 1)[0])
console.log(team)

Here I am chaning the index of the team from 0 to 5 which gives me output like:

["Green","Blue","Yellow","Black","White","Red","Orange"]

The 0 index positioned to 5.

Now I have an dictionary which contains the captain for the team according to index.

var captians = [{'index': 0, 'captain': 'Jack'}, {'index': 1, 'captain': 'Daniel'}]

Here 0 is the index of team. Team red's captain is Jack When team is changed in index I want to change the captains accordingly.

How can I do this ??

Answer 1

You could iterate over and move all indices in the interval a position.

var team = ["Red", "Green", "Blue", "Yellow", "Black", "White", "Orange"],
    from = 0,
    to = 5,
    captians = [{ 'index': 0, 'captain': 'Jack' }, { 'index': 1, 'captain': 'Daniel' }];

team.splice(to, 0, team.splice(from, 1)[0]);

captians.forEach(function (a) {
    if (a.index === from) {
        a.index = to;
        return;
    }
    if (from < to && a.index > from && a.index <= to) {
        a.index--;
    }
    if (from > to && a.index >= to && a.index < from) {
        a.index++;
    }
});

console.log(captians);