JavaScript arrays are a data structure used to store and manipulate lists of values. They can contain any type of data, including numbers, strings, and objects. Arrays are declared using square brackets and can be initialized with values or left empty. They offer a variety of methods for adding, removing, and manipulating elements within the array, including push(), pop(), shift(), and unshift(). Arrays are commonly used in JavaScript for tasks such as storing and organizing data, building user interfaces, and processing user input. To know more about the JavaScript Arrays connect at the website.