如何获取JavaScript对象属性的子集？
假设以下是我们的对象-
var details ={
firstName: "John",
lastName: "Smith",
age:21,
subjectName:"JavaScript",
marks:89,
coutryName:"US",
collegeName:"MIT",
passoutYear:2018
};以下是仅获取子集的代码-
示例
var details ={
firstName: "John",
lastName: "Smith",
age:21,
subjectName:"JavaScript",
marks:89,
coutryName:"US",
collegeName:"MIT",
passoutYear:2018
};
var selectedFieldFromObjectDetails = (({ firstName,
subjectName,marks,passoutYear }) => ({ firstName,
subjectName,marks,passoutYear }))(details);
console.log(selectedFieldFromObjectDetails);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demo120.js。
输出结果
这将产生以下输出-
PS C:\Users\Amit\JavaScript-code> node demo120.js{
firstName: 'John',
subjectName: 'JavaScript',
marks: 89,
passoutYear: 2018
}