revision:
The Object.create() static method creates a new object, using an existing object as the prototype of the newly created object.
Object.create(proto)
Object.create(proto, propertiesObject)
Parameters:
proto : required. The object which should be the prototype of the newly-created object.
propertiesObject : optional. If specified and not undefined, an object whose enumerable own properties specify property descriptors to be added to the newly-created object, with the corresponding property names. These properties correspond to the second argument of Object.defineProperties().
const person = {
isHuman: false,
printIntroduction: function() {
console.log(`My name is ${this.name}. Am I human? ${this.isHuman}`);
}
};
const me = Object.create(person);
me.name = 'Matthew'; // "name" is a property set on "me", but not on "person"
me.isHuman = true; // Inherited properties can be overwritten
me.printIntroduction();
// Expected output: "My name is Matthew. Am I human? true"
<div>
<p id="create-1"></p>
</div>
<script>
// creating a function which will be the prototype for the object to be created later
function fruits() {
this.name = 'fruit 1';
}
// creating a function to whose object will inherit properties from the prototype // using object.create() method
function apple() {
fruits.call(this);
}
// creating an object of the apple function which will have properties of the prototype object i.e. fruits
apple.prototype = Object.create(fruits.prototype);
const app = new apple();
// Displaying the created object
console.log(app.name);
document.getElementById("create-1").innerHTML = "object created: " + app.name;
</script>
<div>
<p id="create-2"></p>
<p id="create-3"></p>
</div>
<script>
// creating a function which will be the prototype for the object to be created later
function fruits1() {
this.name = 'fruit 2';
this.season = 'summer';
}
// creating a function to whose object will inherit properties from the prototype using object.create() method
function apple1() {
fruits1.call(this);
}
// creating an object of the apple function which will have properties of the prototype object i.e. fruits
apple1.prototype = Object.create(fruits1.prototype);
const app1 = new apple1();
// Displaying the created object
console.log(app1.name);
console.log(app1.season);
document.getElementById("create-2").innerHTML = "object created: " + app1.name;
document.getElementById("create-3").innerHTML = "object created: " + app1.season;
</script>