Arrays are wonderful and a very particular type in JavaScript. There are many useful built-in properties and methods that will help you resolve any task which involves this kind of type. Today, we ...

Step 5. Create an array of unique values in a table column It can be useful to get one column’s unique values as a vanilla JavaScript array, for tasks such as populating an input dropdown list.

Functional programming with arrays Although JavaScript’s arrays are very capable out of the box, the functional paradigm improves the clarity and maintainability of array code.