In this lesson, you'll learn about the array.filter() method in JavaScript, which is used to create a new array containing elements that pass a specified test. This method is a powerful tool for extracting elements from an array based on specific criteria . ### Array.filter() The filter() method creates a new array with all elements that pass the test implemented by the provided function. It's a concise and efficient way to filter out unwanted elements from an array. #### Filtering Positive Numbers Let's start with a simple example where we filter out positive numbers from an array: