使用java脚本对带有日期和时间的大量数组数据进行排序

Question

Have a large list of array data of which can exceed to N number. Need to sort the array elements with latest date and time.

let array = [{"name": "Apple","modified_date": "2020-08-26 02:03:23.756"},
             {"name": "Orange","modified_date": "2020-08-26 03:03:23.756"},
             {"name": "Grapes","modified_date": "2020-08-26 04:03:23.756"}................N number length]

able to sort using small size of array

let sort = array.sort(function(a, b) { 
            return (new Date(b.modified_date)).getTime() - (new Date(a.modified_date)).getTime();
        });

But with large length array correct sorting is not happening.What could be the issue!!!!?

Answer 1

You could avoid creation of O(2*n*log(n)) Date objects. String compare will yield the same result as Date(str).getTime() compare yields. The string comparison method is a very much better idea.

 let array = [{"name": "Apple","modified_date": "2020-08-26 02:03:23.756"}, {"name": "Orange","modified_date": "2020-08-26 03:03:23.756"}, {"name": "Grapes","modified_date": "2020-08-26 04:03:23.756"}]; array.sort((a, b) => b.modified_date.localeCompare(a.modified_date)); console.log(array);