Update the array with the new object by iterating over the array: items = items.map(x => (x.id === item.id) ? item : x)

Nov 7, 2019 · const arrayOfBooks = [ {book: 1}, {book: 2}, {book: 3}, {book: 4}, ] const addBook = (list, book) => { list.push(book) } addBook(arrayOfBooks, {book: 5, isTheNewOne: true}) const …

Nov 2, 2014 · Try iterating through the elements of the persons object, update the element if a member with the same name exists, if it doesn't, push a new element to the array. Use a new …

How to use the JavaScript Array splice method to delete existing elements, insert new elements, and replace elements in an array.

When you work with arrays, it is easy to remove elements and add new elements. This is what popping and pushing is: Popping items out of an array, or pushing items into an array. The …

Feb 13, 2020 · In this tutorial we will create a Create, Read, Update, Delete (CRUD) using JavaScript. This code will add, delete, update and read a data table when the user open the …

Mar 22, 2023 · This quick and straightforward article shows you a couple of different ways to update or replace a specific element in an array in modern JavaScript. Using array[index] …

Instead of mutating an array, create a new version of it, and update the state to it. You can use the [...arr, newItem] array spread syntax to create arrays with new items. You can use filter() …

If you want to remove an element in the middle of an array you can use splice thus. function removeElementAtIndex(arr, i) { Array.prototype.splice.call(arr, i, 1); }

Jun 12, 2023 · By leveraging different techniques, such as iterating through the array, using Array.map(), or utilizing Array.findIndex(), you can efficiently update objects based on specific …