Remove Specific Elements from JavaScript Arrays

There are many ways to remove specific items from an array in JavaScript, but one of the easiest methods is to use the filter() function.

Here’s a quick guide, including examples for single and multiple-item removal.

Single Item Removal

To remove a single item from an array, you can use the filter() method to create a new array that contains all elements of the original array except for the specified item to remove.

const array = [1, 2, 3, 4, 5];
const itemToRemove = 3;

const filteredArray = array.filter(item => item !== itemToRemove);

console.log(filteredArray); // [1, 2, 4, 5]

In this example, filter() iterates over the array and returns a new array that includes every item except for the one that matches itemToRemove.

Multiple Items Removal

To remove multiple items from an array, you can still use the filter() method, but this time, we also use the includes() method. This allows you to specify an array of items to remove.

const array = [1, 2, 3, 4, 5];
const itemsToRemove = [2, 4];

const filteredArray = array.filter(item => !itemsToRemove.includes(item));

console.log(filteredArray); // [1, 3, 5]

Here, filter() is used to iterate over the array, and for each element, includes() checks if it is in the itemsToRemove array. If an item is not included in itemsToRemove, it's kept in the resulting filteredArray.

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Written by Niall Maher

Founder of Codú - The web developer community! I've worked in nearly every corner of technology businesses; Lead Developer, Software Architect, Product Manager, CTO and now happily a Founder.


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