First, we declare a variable called ‘ sum’ and initialized it to zero (0). Here, we are using a pretty simple algorithm. Let’s start with the forEach() method in Javascript. We can use various methods to get the sum of all the elements in the array. Let’s look at the array of numbers below. Conclusion Introduction to the Array.reduce() Method in Javascript.Example 4: Counting the Instances of an Item in an Array.Example 3: Grouping Items with the Same Values.Example 1: Get the Sum of Elements in an Array.The ES6 version of the Array.reduce() Method.The ES5 version of the Array.reduce() Method.The Callback Function in Array.reduce() Method.Introduction to the Array.reduce() Method in Javascript.
