javascript sum array of objects value

JavaScript provides several methods to manipulate array of objects, and sum of values array of objects by key can be achieved using different approaches. In this tutorial, we'll explore three methods: using reduce() and loop(), using forEach(), to sum array of object values in javascript by key.

Using the reduce method:

The reduce method is a powerful functional programming tool in JavaScript that iterates through the array, accumulating a value based on a provided callback function. In this case, the callback function sums the values of the specified key in each object.

Using a loop:

A traditional loop, such as a for loop, iterates through each element of the array, allowing you to manually sum the values based on the specified key. This method is straightforward and easy to understand.

Using the forEach method:

The forEach method is a convenient way to iterate through each element of an array. In this approach, a callback function is executed for each object, and the values are summed based on the specified key. It provides a more concise syntax compared to a traditional loop.

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