How to sum values using for loop in JavaScript?

To sum values using a for loop in JavaScript, you can start by declaring a variable to hold the sum and setting it to 0.

Then, you can iterate over the array using a for loop and add each element to the sum variable. Here's an example:

<script>
 let myArray = [1, 2, 3, 4, 5];
 let sum = 0;

 for(let i = 0; i < myArray.length; i++) {
   sum += myArray[i];
 }

 console.log(sum); // Output: 15
</script>

In the above example, the for loop iterates through the elements of myArray and adds each one to the sum variable. At the end of the loop, the total sum is printed to the console.

How to sum values using for loop in JavaScript. #

1. Declare a variable to hold the sum and set it to 0.
2. Initialize a for loop that iterates over your array.
3. Inside the for loop, add the current element to the sum variable.
4. After the for loop finishes, the sum variable will contain the total.
5. You can access each element of an array using its index (e.g. myArray[i]).
6. The length property of an array tells you how many elements it contains (e.g. myArray.length).
7. The for loop condition should check that the index is less than the length to prevent an index out of bounds error.
8. There are alternative methods for summing arrays, such as reduce() and forEach(), but a for loop can be a straightforward approach.