Understanding Nested Loops
In JavaScript, loops are a fundamental programming construct that allow us to repeat a block of code multiple times. Among the various types of loops, nested loops play a pivotal role, especially when dealing with multidimensional structures such as arrays of arrays. A nested loop is simply a loop inside another loop, which enables programmers to traverse complex data structures efficiently. This technique becomes particularly valuable when we want to process and manipulate elements within nested arrays, which will ultimately help in scenarios like summing up the values in these structures.
Let’s begin with a practical example. Imagine you have a two-dimensional array representing a matrix of numbers. You may want to compute the sum of all the numbers in that matrix. In this case, a nested loop comes into play where the outer loop iterates through each array (or