This content originally appeared on DEV Community and was authored by Christian Heilmann
JavaScript now has a way to change elements, sort, reverse and splice arrays without changing the original, thus giving it immutability. The new methods are with(), toSorted(), toReversed() and toSpliced(). No need to create a copy with [...arr] first. Only missing support is Firefox.
const arr = ['f','c','k','a','f','d'];
const newArr = arr.with(2,'m');
// newArr -> ['f', 'c', 'm', 'a', 'f', 'd']
const sortArr = arr.toSorted();
// sortArr -> ['a', 'c', 'd', 'f', 'f', 'k']
const reverseArr = arr.toReversed();
// reverseArr -> ['d', 'f', 'a', 'k', 'c', 'f']
const splicedArr = arr.toSpliced(3, 3, 'it');
// splicedArr -> ['f', 'c', 'k', 'it']
This content originally appeared on DEV Community and was authored by Christian Heilmann
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Christian Heilmann | Sciencx (2023-06-06T14:53:21+00:00) New array methods in JavaScript bring immutability. Retrieved from https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/
" » New array methods in JavaScript bring immutability." Christian Heilmann | Sciencx - Tuesday June 6, 2023, https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/
HARVARDChristian Heilmann | Sciencx Tuesday June 6, 2023 » New array methods in JavaScript bring immutability., viewed ,<https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/>
VANCOUVERChristian Heilmann | Sciencx - » New array methods in JavaScript bring immutability. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/
CHICAGO" » New array methods in JavaScript bring immutability." Christian Heilmann | Sciencx - Accessed . https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/
IEEE" » New array methods in JavaScript bring immutability." Christian Heilmann | Sciencx [Online]. Available: https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/. [Accessed: ]
rf:citation » New array methods in JavaScript bring immutability | Christian Heilmann | Sciencx | https://www.scien.cx/2023/06/06/new-array-methods-in-javascript-bring-immutability-2/ |
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