👈 Tips and Tricks

How to use the spread operator to flatten array of objects in javascript

How to use the spread operator to flatten array of objects in javascript

function flatten(arr) {
  while (arr.some((item) => Array.isArray(item))) {
    arr = [].concat(...arr)
  }
  return arr
}
let arr = [1, 2, [3, 4], [5, [6, 7]]]
console.log(flatten(arr))

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How to use the spread operator to flatten array of objects in javascript

How to use the spread operator to flatten array of objects in javascript

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group by property javascript use reduce

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