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Iterating Arrays

Iterating Arrays

Use loops to iterate an array in JavaScript.

In this lesson, we will see how loops iterate arrays, where iterate means accessing elements in the array one by one.

Iterating single-dimensional arrays

To iterate a single dimension array, we design a loop that will index each element and terminate when the end is reached. Take for example the following array:

var arr = [ 10, 25, 7, 100, 20 ];

To iterate it, we start off with the first element (index 0) and end at the last element (index 4).

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