使用 JavaScript 汇总数组中嵌套的对象值
以下是用 JavaScript 汇总数组中嵌套的对象值的代码 −
示例
<!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>
输出
以上代码将产生以下输出 −
单击“点击此处”按钮 −
广告