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Sum of nested object values in Array using JavaScript
Following is the code to sum nested object values in array using JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 18px;
font-weight: 500;
color: rebeccapurple;
}
</style>
</head>
<body>
<h1>Sum of nested object values in Array</h1>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to sum the nested object values of json array
</h3>
<script>
let json = {
storeData: [
{
items: [
{
itemID: 12,
cost: {
costNum: 100,
},
},
{
itemID: 22,
cost: {
costNum: 250,
},
},
{
itemID: 19,
cost: {
costNum: 350,
},
},
],
},
],
};
let resEle = document.querySelector(".result");
document.querySelector(".Btn").addEventListener("click", () => {
let sum = 0;
json.storeData.map((ele) => ({
itemPrice: ele.items.forEach((item) => {
sum += item.cost.costNum;
}),
}));
resEle.innerHTML += "Total CostNum = " + sum + "<br>";
});
</script>
</body>
</html>
Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
Updated on: 2020-07-18T07:53:21+05:30
1K+ Views
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