Javascript 根据列表索引更新字典

Question

我有一个列表，其中根据颜色包含一个团队:

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)

在这里，我将团队的索引从 0 更改为 5，这给我的输出如下:

["绿色","蓝色","黄色","黑色","白色","红色","橙色"]

0 索引定位到 5。

现在我有一个字典，根据索引包含球队的队长。

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

这里的0是team的索引。 red 队的队长是 Jack 当索引中的团队发生变化时，我想相应地更改队长。

我该怎么做？？

Answer 1

您可以遍历并将区间中的所有索引移动到一个位置。

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);