Object create and defineProperties Method

• New ECMAScript 5.1 has new methods create() and defineProperties() method.

• Using create() method you can create new object.

• Using defineProperties() method can be used to create new properties for the given object.

• In this Demo, “We will create new object using create() method and add new property using defineProperties() method“.

• Below code uses the create() method to make student1 object and uses defineProperties() method to add new  properties subject and mark.

function Student(name) {
    this.name = name;
}
var student1 = Object.create(Student.prototype),
properties ={
  "subject": {
    value: "Computer",
    writable: true,
    enumerable:true
  },
  "marks": {
    value: 0,
    writable: false,
    enumerable:true
  }
};
Object.defineProperties(student1, properties);
student1.name = "Sandeep";
student1.subject ="Mathematics";
student1.marks=75;
console.log(student1);

• The output of the above code is embedded in below JSBIN link.

JS Bin