How to remove few objects from array

Question

I'm trying to remove one or few objects from array. Which meet the condition completed === true. Array can dynamically contain more or less objects.

const array = [{
    completed: false,
    id: 1595572089666,
    title: "1"
  },
  {
    completed: false,
    id: 1595572089666,
    title: "2"
  },
  {
    completed: true,
    id: 1595572089666,
    title: "3"
  },
  {
    completed: true,
    id: 1595572089666,
    title: "4"
  },
  {
    completed: false,
    id: 1595572089666,
    title: "5"
  }
];

function removeCompleted(arr) {
  arr.reduce(item => {
    return item.completed === true ? item.splice(1, 1) : false;
  });
}

Have you tried `Array.prototype.filter()`? `const filtered = array.filter(({ completed }) => !completed)` — Phil, Jul 24 '20 at 06:34
Does this answer your question? [How can I remove a specific item from an array?](https://stackoverflow.com/questions/5767325/how-can-i-remove-a-specific-item-from-an-array) — glinda93, Jul 24 '20 at 06:35
From the duplicate, see [this answer](https://stackoverflow.com/a/20690490/283366) — Phil, Jul 24 '20 at 06:37

score 2 · Answer 1 · answered Jul 24 '20 at 06:36

2

You can use filter method to remove object based on completed property.

let array = [{
    completed: false,
    id: 1595572089666,
    title: "1"
  },
  {
    completed: false,
    id: 1595572089666,
    title: "2"
  },
  {
    completed: true,
    id: 1595572089666,
    title: "3"
  },
  {
    completed: true,
    id: 1595572089666,
    title: "4"
  },
  {
    completed: false,
    id: 1595572089666,
    title: "5"
  }
];

array = array.filter(item => item.completed != true);

console.log(array);

answered Jul 24 '20 at 06:36

Ferin Patel

1,560
2
4
32

1

i want remove items from existing array without creating new array – Imp3l Jul 24 '20 at 06:38
This will not create new array. It will just overwrite existing array without using extra memory – Ferin Patel Jul 24 '20 at 06:42
_The [filter()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) method creates a **new** array with all elements that pass the test implemented by the provided function._ – Nikita Madeev Jul 24 '20 at 07:09

How to remove few objects from array

1 Answers1