In my experience, I've frequently used arrays in JavaScript to manage collections of data. For instance, while working on a project that involved managing a list of user inputs, I utilized arrays to store and manipulate the data efficiently. I used various array methods like `push()` to add new elements, `splice()` to remove elements, and `map()` to transform the data as needed. This approach allowed me to dynamically update the list based on user interactions, ensuring that the application remained responsive and user-friendly. Additionally, I leveraged the `filter()` method to create a subset of the array based on specific criteria, which was particularly useful for implementing search functionality within the application.