从JavaScript中的对象数组中获取特定值？

假设以下是我们的对象数组：

const details =
   [
      {
         employeeFirstName: "John",
         employeeLastName: "Doe"
      },
      {
         employeeFirstName: "David",
         employeeLastName: "Miller"
      },
      {
         employeeFirstName: "John",
         employeeLastName: "Smith"
      }
   ]

示例

以下是获取特定值的代码，在这种情况下，其名字为“ John”-

const details =
   [
      {
            employeeFirstName: "John",
            employeeLastName: "Doe"
      },
      {
         employeeFirstName: "David",
         employeeLastName: "Miller"
      },
      {
         employeeFirstName: "John",
         employeeLastName: "Smith"
      }
   ]
for (var index = 0; index < details.length; index++) {
   if (details[index].employeeFirstName === "John") {
      console.log("FirstName=" + details[index].employeeFirstName + " LastName= " + details[index].employeeLastName);
   }
}

要运行以上程序，您需要使用以下命令-

node fileName.js.

在这里，我的文件名为demo223.js。

输出结果

输出如下-

PS C:\Users\Amit\JavaScript-code> node demo223.js
FirstName=John LastName= Doe
FirstName=John LastName= Smith