Javascript 按日期对 JSON 进行排序

sort JSON by date

提问by Munzilla

I know this must be relatively simple, but I have a dataset of JSON that I would like to sort by date. So far, I've run into problems at every turn. Right now I have the date stored as this.lastUpdated. I have access to jquery if that helps, but I realize the .sort() is native JS. Thanks in advance.

我知道这一定相对简单，但我有一个 JSON 数据集，我想按日期排序。到目前为止，我每次都遇到问题。现在我将日期存储为this.lastUpdated. 如果有帮助，我可以访问 jquery，但我意识到 .sort() 是原生 JS。提前致谢。

回答by Sean Vieira

Assuming that you have an array of javascript objects, just use a custom sort function:

假设您有一组 javascript 对象，只需使用自定义排序函数：

function custom_sort(a, b) {
    return new Date(a.lastUpdated).getTime() - new Date(b.lastUpdated).getTime();
}
var your_array = [
    {lastUpdated: "2010/01/01"},
    {lastUpdated: "2009/01/01"},
    {lastUpdated: "2010/07/01"}
];

your_array.sort(custom_sort);

The Array sortmethod sorts an array using a callback function that is passed pairs of elements in the array.

Arraysort方法使用传递数组中元素对的回调函数对数组进行排序。

• If the return value is negative, the first argument (ain this case), will precede the second argument (b) in the sorted array.
• If the returned value is zero, their position with respect to each other remains unchanged.
• If the returned value is positive, bprecedes ain the sorted array.

• 如果返回值为负，则第一个参数（a在本例中）将在b排序数组中的第二个参数 ( )之前。
• 如果返回值为零，则它们相对于彼此的位置保持不变。
• 如果返回值是正数，则排在已排序数组的b前面a。

You can read more on the sortmethod here.

您可以在此处阅读有关该sort方法的更多信息。