在javascript中移动对象元素位置 [英] Move object element position in javascript

问题描述

我正在尝试找到一种将对象元素移动到特定位置的方法.

I'm trying to find a way to move an object element to a specific position.

例如，我有这个对象:

{
    "element1" : {} // object,
    "element2" : {},
    "element3" : {}
}

我搜索将 element3 移动到第一个位置:

And I search to move element3 at the first position :

{
    "element3" : {},
    "element1" : {},
    "element2" : {}
}

感谢您的帮助！

推荐答案

JavaScript 对象没有顺序.您应该改用一组对象.

JavaScript objects don't have ordering. You should use an array of objects instead.

var arr = [
  { id: 'element1' },
  { id: 'element2' },
  { id: 'element3' }
]

然后你可以像这样重新排序:

You could then reorder it something like:

var first = arr.splice(0, 1);
arr.push(first);

也许你可以根据 id 获取特定元素:

Maybe you could then grab specific elements based on id:

var out = arr.filter(function (el) {
  return el.id === 'element1';
});

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