How to use a For Loop In Javascript
The traditional for loop is one of the most direct way to iterate over an array and sum its elements. You initialize a sum variable to zero, then iterate through each element of the array, adding each element to the sum.
Example: To demonstrate the sum of all elements in an array using a simple loop.
let array = [1, 2, 3, 4, 5];
let sum = 0;
for (let i = 0; i < array.length; i++) {
sum += array[i];
}
console.log(sum);
Output
15
How to Add the Numbers in a JavaScript Array?
Adding the numbers in a JavaScript array is a common operation, particularly in tasks involving data aggregation or mathematical calculations. This process involves iterating through the array and summing its elements. JavaScript provides multiple methods to achieve this, ranging from traditional loops to more modern and concise array methods.
Table of Content
- Using a For Loop
- Using a While Loop
- Using Array.prototype.reduce()
- Using For-Of Loop