# Calculate and Print the Sum of the Fibonacci Series Less than 100 in JavaScript

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In this program, we will be calculating and print the sum of the Fibonacci series less than 100. The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones, starting with 0 and 1. For example, the first 10 numbers in the Fibonacci series are 0, 1, 1, 2, 3, 5, 8, 13, 21, and 34. Using a `while` loop, we will iterate through the series, adding up the numbers that are less than 100 and printing the final sum to the console. Let’s get started!

Here is a JavaScript program that will calculate and print the sum of the Fibonacci series less than 100:

``````
function sumFibonacci() {
let sum = 0;
let current = 1;
let previous = 0;

while (current < 100) {
sum += current;
let temp = current;
current += previous;
previous = temp;
}

console.log(sum);
}

sumFibonacci();
``````

Now let’s understand How the program works

This function first declares and initializes three variables: `sum`, `current`, and `previous`. `sum` will be used to store the sum of the Fibonacci numbers less than 100, `current` will keep track of the current Fibonacci number, and `previous` will keep track of the previous Fibonacci number.

The function then enters a `while` loop that continues until `current` is greater than or equal to 100. On each iteration of the loop, it adds the value of `current` to `sum` and updates the values of `current` and `previous` to be the sum of the two previous numbers.

After the `while` loop completes, the function prints the value of `sum` to the console.

### Publisher

Publisher @ideasorblogs