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I need to filter out the empty arrays inside the array called arr.

Here's what I see when I console.log([arr]):

I have tried console.log([arr].filter(arr => arr.length > 0)) with no luck (getting [])

about 4 years ago · Juan Pablo Isaza

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Answer 1 · 2022-07-10T11:25:32.809Z

As was pointed out by @robin-zigmond, you are dealing with an object here containing array properties.

You can use the delete operator to delete properties from an object:

for (let prop in arr) {
  if (arr[prop].length === 0) {
    delete arr[prop];
  }
}

This will remove all zero-length properties from the arr object.