How to remove properties of objects from a array in javascript?

Question

How to remove a key from an object

This function takes an array of user objects and deletes the moto key-value pair on each user object.

I have tried this code:

function deleteAllMoto(users) {

   for(var i=0; i<=users.length; i++) {

    delete users[i].password;
    return users[i];

}

dahliacreative · Accepted Answer · 2019-05-31 18:52:26Z

1

Something like this:

function deleteAllMoto (arr) {
  arr.forEach(function(item) {
    delete item.moto
  })
  return arr
}

From your code you are deleting password not moto, then trying to return each user instead of the whole array after the mutations.

answered May 31, 2019 at 18:39

dahliacreative

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2 Comments

Yes, It works. One more thing how to count number of objects in the array?

you can just use length e.g. arr.length

Julian W. · Accepted Answer · 2019-05-31 18:43:04Z

0

deleteAllMoto function should be

function deleteAllMoto(users) {

  for(var i=0; i<=users.length; i++) {
    delete users[i].moto;
  }
  return users;

}

answered May 31, 2019 at 18:43

Julian W.

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