仅将特定值乘以JavaScript对象？
假设以下是我们的对象-
var employee =
[
{ name: "John", amount: 800 },
{ name: "David", amount: 500 },
{ name: "Bob", amount: 450 }
]仅当金额大于500时，我们才需要将“金额”值乘以2，即预期输出应为-
[
{ name: 'John', amount: 1600 },
{ name: 'David', amount: 500 },
{ name: 'Bob', amount: 900 }
]示例
这是将对象值相乘的示例示例-
var employee =
[
{ name: "John", amount: 800 },
{ name: "David", amount: 500 },
{ name: "Bob", amount: 450 }
]
console.log("Before multiplying the result=")
console.log(employee)
for (var index = 0; index < employee.length; index++) {
if (employee[index].amount > 500) {
employee[index].amount = employee[index].amount * 2;
}
}
console.log("After multiplying the result=")
console.log(employee)要运行上述程序，您需要使用以下命令-
node fileName.js.
在这里，我的文件名为demo257.js。
输出结果
这将在控制台上产生以下输出-
PS C:\Users\Amit\javascript-code> node demo257.js
Before multiplying the result=
[
{ name: 'John', amount: 800 },
{ name: 'David', amount: 500 },
{ name: 'Bob', amount: 450 }
]
After multiplying the result=
[
{ name: 'John', amount: 1600 },
{ name: 'David', amount: 500 },
{ name: 'Bob', amount: 900 }
]