In JavaScript and Node.js, you can use Set or the filter method to remove duplicate values from arrays. This method is also applicable in React.
Example:
// Array with duplicate values
const array = [1, 2, 2, 3, 4, 4, 5];
// Removing duplicates using Set
const uniqueArray = [...new Set(array)];
console.log(uniqueArray);
🔵 Code Explanation:
- By converting the array into a
Set, all duplicate values are removed sinceSetonly stores unique values. - The spread operator is used to convert it back to an array, resulting in
[1, 2, 3, 4, 5].