Jun 12, 2017 · The sum of digits can be calculated using that function (based on other answers): function sumDigits(n) { let sum = 0; while (n) { digit = n % 10; sum += digit; n = (n - digit) / 10; } return sum; }

May 28, 2024 · In this article, we are going to learn about finding the Sum of Digits of a number using JavaScript. The Sum of Digits refers to the result obtained by adding up all the individual numerical digits within a given integer.

Dec 10, 2015 · On each iteration, convert the number to a string (num.toString()), and then use the .split() method to generate an array of numbers. In other words, 333 would return [3, 3, 3] . Then use the .reduce() method to add the current/previous numbers in …

Mar 1, 2025 · Write a JavaScript program to calculate the sum of a given number's digits. In mathematics, the digit sum of a natural number in a given number base is the sum of all its digits. For example, the digit sum of the decimal number 6098 would be 6+0+9+8=23.

Mar 12, 2024 · In this approach, we convert the number to a string usin toString () method, split it into individual digits using split () method, and then recursively sum them up. Example: The below code sums up the digits of a number using string manipulation in JavaScript.

Sep 17, 2023 · In this post, I will show you how to write a JavaScript program to add the digits of a given number or it will find the sum of the digits of a number. For example, if the number is 234, it will print 9. With this approach, we will use one while loop …

Nov 22, 2024 · The program defines a function sumOfDigits that takes a number as input and returns the sum of its digits. Inside the function, it uses a while loop to iterate through each digit of the number. It extracts the last digit, adds it to the sum, …

Mar 3, 2024 · To sum all the digits in a number: Convert the number to a string. Use the split() method to split the string into an array of digits. Use the reduce() method to sum up all the digits in the array. The function takes a number as a parameter and …

Feb 4, 2012 · function sumDigits(number) { var str = number.toString(); var sum = 0; for (var i = 0; i < str.length; i++) { sum += parseInt(str.charAt(i), 10); } return sum; } It does literally what you are trying to do, which is iterate over the digits of the number (by converting it to a string).

Sep 23, 2022 · To find the sum of digits in JavaScript, there are two approaches, the first is to divide the number and add the remainder to obtain the sum, and the other is by using split and reduce methods in JavaScript.