Welcome to today's session on "Multidimensional Arrays and Their Traversal in JavaScript". Multidimensional arrays are types of arrays that store arrays at each index instead of single elements. They allow us to create complex data structures that can model various real-life scenarios. Our goal today is to strengthen your foundational knowledge of multidimensional arrays and how to handle them effectively in JavaScript.

To construct a multidimensional array in JavaScript, we use arrays of arrays. Here is an example to demonstrate how to create and work with 2D static arrays:

All indices in JavaScript arrays are 0-based. In a 1-dimensional array, the [n] notation is used to access the (n+1)th element. For example, in the array ['a', 'b', 'c'], to access the element 'b', you would use array[1] since indices are zero-based.

For multidimensional arrays, each element is itself an array. Therefore, you can access an entire row (inner array) or a specific element within that row. Let's say you want to access the first row and the second element within that row: