31-May-2023
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I will explain step by step tutorial how to sum a property in an array of objects in javascript. if you want to see example of javascript sum array of objects value – examples then you are a right place. I would like to show you javascript - sum values of objects in array. I would like to share with you javascript - how to find the sum of an array of numbers.
To sum a property in an array of objects in JavaScript, you can use the reduce() method. Here's an example:
Example 1:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>How to Sum a Property in an Array of Objects in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
const items = [
{ name: "item1", price: 10 },
{ name: "item2", price: 20 },
{ name: "item3", price: 30 }
];
const totalPrice = items.reduce((acc, item) => acc + item.price, 0);
console.log(totalPrice); // Output: 60
</script>
</html>
In this example, we have an array of objects that represent items with their respective prices. We want to calculate the total price by summing the `price` property of each object.
We use the reduce() method on the `items` array and pass a callback function as its argument. The callback function takes two parameters - `acc` (accumulator) and `item`. The accumulator is initialized to zero (0) as the second argument to reduce().
Inside the callback function, we add the current `item.price` value to the accumulator (`acc`). Finally, reduce() returns the accumulated value which is our total price.
Note that if your property contains non-numeric values, you may need to convert them to numbers before summing them up.
#JavaScript
