In this Article we will go through how to remove duplicate values in an array only using single line of code in JavaScript.
This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function
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Let's define this short function:
const removeDuplicate = arr => arr.filter(i => arr.indexOf(i) === arr.lastIndexOf(i));
removeDuplicate(['h', 'e', 'l', 'l', 'o', 'w', 'o', 'r', 'l', 'd']); // ['h', 'e', 'w', 'r', 'd']