How to useFor…of Loop in Javascript
In this approach, Iterate through each digit of a number by converting it to a string, then use a for…of loop to add parsed digits, resulting in the sum.
Syntax:
for ( variable of iterableObjectName) {
. . .
}
Example: In this example we are using the above-explained approach.
function sumOfDigit(num) {
let numStr = num.toString();
let sum = 0;
for (let digit of numStr) {
sum += parseInt(digit);
}
return sum;
}
console.log(sumOfDigit(738));
Output
18
JavaScript Program for Sum of Digits of a Number
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. It’s a basic arithmetic operation. This process is repeated until a single-digit sum, also known as the digital root.
There are several methods that can be used to find the Sum Of Digits by using JavaScript, which are listed below:
Table of Content
- Approach 1: Using Array Reduce() Method
- Approach 2: Using For…of Loop
- Approach 3: Using Math.floor and Division
- Approach 4: Using forEach
- Approach 5: Using Recursion
We will explore all the above methods along with their basic implementation with the help of examples.