Question 309316 in Javascript Question posted in
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Javascript – Array to Object with nesting childs in js

i have the Array in js, but how to convert to object with nesting childs ?

This is my array:

const arr = [{ no: 1 }, { no: 2 }, { no: 3 }];

this is output my expected:

// output
const obj = { no: 1, nest: [{ no: 2, nest: [{ no: 3 }] }] };
Tags:

3

Answers


  1. 0

    You can do it by arr.reduceRight.
    Here is an example –

    const arr = [{ no: 1 }, { no: 2 }, { no: 3 }];
const obj = arr.reduceRight((acc, curr) => ({...curr, nest: [acc]}));
console.log(obj);

    output: 

    { no: 1, nest: [ { no: 2, nest: [Array] } ] }
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  2. 0

    using reduce

    const result = arr.reverse().reduce((acc, curr) => {
  return {no: curr.no, nest: [acc]}
})

// result is { no: 1, nest: [{ no: 2, nest: [{ no: 3 }] }] };
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  3. 0

    You want to right reduce your array. With reference to this Array.prototype.reduceRight()

    Example:

        const arr = [{ no: 1 }, { no: 2 }, { no: 3 }];
    const result = array1.reduceRight((accumulator, currentValue) =>
    accumulator.concat(currentValue),);
    console.log(result);

    Output:

    { no: 1, nest: [ { no: 2, nest: [Array] } ] }
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