Arrays and Loops

In JavaScript, arrays are used to store multiple values in a single variable. They are an essential data structure for organizing and manipulating collections of data.

To work with arrays effectively, you need to understand how to iterate over them using loops. A loop allows you to execute a block of code repeatedly until a certain condition is met.

One common type of loop used with arrays is the for loop. It allows you to iterate over each element in an array and perform a specific action.

Here's an example of iterating over an array using a for loop:

1// Example of iterating over an array using a for loop
2
3const numbers = [1, 2, 3, 4, 5];
4
5for (let i = 0; i < numbers.length; i++) {
6  console.log(numbers[i]);
7}

In this example, we have an array called numbers that contains the numbers 1 to 5. The for loop iterates over each element in the array, and the value of each element is printed to the console.

By understanding how to work with arrays and iterate over them using loops, you'll have the necessary skills to manipulate and process collections of data in JavaScript.

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// Example of iterating over an array using a for loop

​

const numbers = [1, 2, 3, 4, 5];

​

for (let i = 0; i < numbers.length; i++) {

  console.log(numbers[i]);

}