How to sort object in array javascript

Question

How can I sort my array data

Here is my structure data

array -> object -> array

I want to sort By tags if tags not empty it should be display first

 "data": [
         {
            "id": 2
            "name": "product2",
            "tags": [],
        },
         {
            "id": 3,
            "name": "product",
            "tags": [
                {
                    "id": 3,
                    "name": "Promoion product",
                }
            ],
        },
        {
            "id": 1,
            "name": "product",
            "tags": [
                {
                    "id": 4,
                    "name": "new product",
                }
            ],
        },

    ]

I want my output look like this

 "data": [
         {
            "id": 3,
            "name": "product",
            "tags": [
                {
                    "id": 3,
                    "name": "Promoion product",
                }
            ],
        },
        {
            "id": 1,
            "name": "product",
            "tags": [
                {
                    "id": 4,
                    "name": "new product",
                }
            ],
        },
          {
            "id": 2
            "name": "product2",
            "tags": [],
        },
    ]

tags [] should be the last one I try to use lodash but still not working

Answer 1

Just sort descending by tags length

 obj.data.sort((a, b) => b.tags.length - a.tags.length); console.log(obj.data);

 <script> const obj = { "data": [ { "id": 2, "name": "product2", "tags": [], }, { "id": 3, "name": "product", "tags": [ { "id": 3, "name": "Promoion product", } ], }, { "id": 1, "name": "product", "tags": [ { "id": 4, "name": "new product", } ], }, ] }; </script>

Answer 2

You could sort by checking the length and move only empty tags to bottom and leave the rest unsorted.

 var data = [{ id: 2, name: "product2", tags: [] }, { id: 3, name: "product", tags: [{ id: 3, name: "Promoion product" }] }, { id: 1, name: "product", tags: [{ id: 4, name: "new product" }] }]; data.sort((a, b) => !a.tags.length - !b.tags.length); console.log(data);

 .as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 3

只需按标签长度对其进行排序：

const formatedData = data.sort((a,b) => b.tags.length - a.tags.length))