What is the purpose of using iteration or looping statements in a javascript code

In computer science, a loop is a programming structure that repeats a sequence of instructions until a specific condition is met. Programmers use loops to cycle through values, add sums of numbers, repeat functions, and many other things
Loops allow programs to perform repetitive tasks, such as iterating through an array, while adhering to the DRY principle (Don't Repeat Yourself). They come in handy when you want to execute a function a number of times, using different sets of inputs each time.

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