从 JavaScript 中的对象数组中获取特定值?


假设我们的对象数组如下

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

以下是获取特定值的代码,本例中获取名字为 “John” − 的值

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,你需要使用以下命令 −

node fileName.js.

此处,我的文件名是 demo223.js。

输出

输出如下 −

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

更新于: 03-Oct-2020

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