const list = [
{
"id": "1",
"createdDate": "2022/03/24 09:49",
"count": 15,
"type": 1,
"title": "テスト",
"uploader": "アップロード",
},
{
"id": "7",
"createdDate": "2022/06/17 11:34",
"count": 5,
"type": 3,
"title": "テスト",
"uploader": "アップロード",
},
{
"id": "3",
"createdDate": "2022/06/17 11:00",
"count": 15,
"type": 1,
"title": "テスト",
"uploader": "アップロード2",
},
{
"id": "31",
"createdDate": "2022/06/17 12:00",
"count": 1,
"type": 2,
"title": "テスト",
"uploader": "アップロード2",
},
];
const result = list.find(x => x. id == "3");
const result2 = list.filter(x => x. type == "3");
const result3 = list.filter(x => x. uploader.toUpperCase().includes("アップロード2"));
// new sort(from new to old)
const result4 = list.sort(function(a,b){
return new Date(b.createdDate) - new Date(a.createdDate);
});
// old sort(from old to new)
const result5 = list.sort(function(a,b){
return new Date(a.createdDate) - new Date(b.createdDate);
});
// asc
const result6 = list.sort(function(a,b){
return b.relatedCount - a.relatedCount;
});
// less
const result6 = list.sort(function(a,b){
return a.relatedCount - b.relatedCount;
});
if array is object Array, error will happened as below.
TypeError: Cannot assign to read only property '0' of object '[object Array]'
need to make a copy of the array before sort.
arrayForSort = [...list]