10 Essential JavaScript Array Methods You Should Know

In this article I share ten JavaScript array methods that every developer should know.

1. forEach() This method helps you iterate over the elements of an array.

2. includes() This method can be used to determine whether an array contains the element you pass to it.

3. filter() This method creates a new array that only includes elements that satisfy the condition you provide.

4. map() This method creates a new array by calling the supplied function on each element of the original array.

5. reduce() The reduce() method applies a function to an accumulator and each element of the array (from left to right) to collapse it into a single value.

6. some() This method checks whether at least one element in the array passes the provided test; it returns true if so, otherwise false .

7. every() This method determines whether all elements in the array satisfy the condition; it returns true if they do, otherwise false .

8. sort() This method sorts the elements of an array in ascending or descending order.

9. Array.from() This method converts array‑like or iterable objects into a true array, which is especially useful when working with DOM collections.

10. Array.of() This method creates an array from the arguments passed to it.

These ten methods form a solid foundation for effective array manipulation in modern JavaScript development.