How to use third-party Library In Javascript
We can also use a third-party library such as Lodash or Underscore.js to remove duplicate elements from a Javascript array. The _.uniq() function returns the array which does not contain duplicate elements.
Example: The _.uniq() function of the underscore.js library is used in the below code to remove elements from an array.
<!DOCTYPE html>
<html>
<head>
<script src=
"https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js">
</script>
</head>
<body>
<script type="text/javascript">
console.log(_.uniq([1, 2, 3, 4, 5, 4, 3, 2, 1]));
</script>
</body>
</html>
Output:
Remove Duplicate Elements from JavaScript Array
JavaScript arrays are the data structures that can store multiple values. However, there may be many cases where an array contains duplicate elements. This guide will walk you through various methods to remove these duplicates and create an array with unique elements.
Note: Learn More about JavaScript Arrays
Methods to Remove Duplicate Elements from JavaScript Array
Table of Content
- Using Javascript filter() Method
- Using Javascript set() Method
- Using Javascript forEach() Method
- Using Javascript reduce() Method
- Using Javascript indexOf() Method
- Using third-party Library