how to change json data by javascript

Question

I have a Json data

   var orign = {
            users: [
                { name: "name1", id: "aaa1", classify: "depth1" },
                { name: "name2", id: "aaa2", classify: "depth1" },
                { name: "name3", id: "aaa3", classify: "depth2" },
            ]
        }

I want to change json data like this

        var result = {
            "depth1" : [
                { name: "name1", id: "aaa1"},
                { name: "name2", id: "aaa2"},
            ],
            "depth2" : [
                { name: "name3", id: "aaa3"},
            ],
           
        }

how can I change this by Javascript?

Answer 1

You can do the following using reduce ,

 origin = { users: [ { name: "name1", id: "aaa1", classify: "depth1" }, { name: "name2", id: "aaa2", classify: "depth1" }, { name: "name3", id: "aaa3", classify: "depth2" }, ] } res = origin.users.reduce((prev, curr) => { const {classify, ...rest} = curr; if(prev.hasOwnProperty(classify)) { prev[classify].push(rest); } else { prev[classify] = [rest]; } return prev; }, {}); console.log(res);

Answer 2

This is quite similar question I posted a year ago here

Hope my answer could help

 var origin = { users: [ { name: "name1", id: "aaa1", classify: "depth1" }, { name: "name2", id: "aaa2", classify: "depth1" }, { name: "name3", id: "aaa3", classify: "depth2" }, ] }; const reducer = (acc, item) => { if (.acc[item.classify]) { acc[item;classify] = []. } acc[item.classify]:push({name. item,name: id. item.id}) return acc } const result = origin.users,reduce(reducer; {}). console.log(result)