Merge nested Array with same key javascript-CodePudding

I have to organise the array, Getting a response array like this

let data = [
    {
        date: "2022-07-01T07:26:22",
        tips: [
            { id: 1 }
        ]
    },
    {
        date: "2022-07-01T12:05:55",
        tips: [
            { id: 1 }
        ]
    },
    {
        date: "2022-07-05T13:09:16",
        tips: [
            { id: 1 }
        ]
    },
    {
        date: "2022-07-05T13:31:07",
        tips: [
            { id: 1 }
        ]
    },
    {
        date: "2022-06-29T09:21:26",
        tips: [
            { id: 1 }
        ]
    }
]

The desired output :

let data = [
    {
        '2022-07-01': [
            {
                tips: [
                    { id: 1 }
                ]
            },
            {
                tips: [
                    { id: 1 }
                ]
            },
        ]
    },
    {
        '2022-07-05': [
            {
                tips: [
                    { id: 1 }
                ]
            },
            {
                tips: [
                    { id: 1 }
                ]
            },
        ]
    },
    {
        '2022-06-29': [
            {
                tips: [
                    { id: 1 }
                ]
            },
        ]
    }
]

I need to get data with the same key in the above array format. I have tried different ways to achieve this but have not gotten the proper result Which is the best way to get the desired output.

Thanks in advance!!!

CodePudding user response：

Here is a solution using reduce. Grouping first using reduce and after that getting the values of the object using Object.values

let data = [    {        date: "2022-07-01T07:26:22",        tips: [            { id: 1 }        ]    },    {        date: "2022-07-01T12:05:55",        tips: [            { id: 1 }        ]    },    {        date: "2022-07-05T13:09:16",        tips: [            { id: 1 }        ]    },    {        date: "2022-07-05T13:31:07",        tips: [            { id: 1 }        ]    },    {        date: "2022-06-29T09:21:26",        tips: [            { id: 1 }        ]    }]

let res = Object.values(data.reduce((acc,{date,tips})=>{
  let key = date.substring(0,10)
  acc[key] = acc[key] || {[key]:[]}
  acc[key][key].push({tips})
  return acc
},{}))

console.log(res)

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