//this refer to global object or window object
//but when we call this inside method of object it refers to current object
console.log(this===window)//true
let user = {
name: "Shirshak",
age: 25,
sayHi() {
// "this" is the "current object"
console.log(this.name); //print shirshak
}
};
let user = {
name: "John",
age: 30,
sayHi() {
// "this" is the "current object"
alert(this.name);
}
};
user.sayHi(); // John// this keyword
// This keyword belongs to the object it belongs to
// (1).Alone, this refers to the global object.
// (2).In a regular function,this refers to the global object.
// (3).In a method, this refers to the owner object.
// 1
console.log(this);
// 2
function abc() {
console.log(this);
}
abc();
// 3
const obj = {
name: "Abhishek",
no: 1,
sum: function (a, b) {
console.log("hello sum", a + b);
console.log("this:::", this);
console.log("this name:::", this.name);
},
};
obj.sum(4, 3);/*In general, the 'this' references the object of which the function is a property.
In other words, the 'this' references the object that is currently calling the function.
Suppose you have an object called 'counter' that has a method 'next()'.
When you call the 'next()' method, you can access the this object. */
let counter = {
count: 0,
next: function () {
return ++this.count;
},
};
counter.next();
//Inside the next() function, the this references the counter
Code language: JavaScript (javascript)const person = {
name: 'John',
age: 30,
// accessing name property by using this.name
greet: function() { console.log('The name is' + ' ' + this.name); }
};
person.greet();// Im Webbrowser ist das window Objekt das globale Objekt:
console.log(this === window); // true
a = 37;
console.log(window.a); // 37
this.b = "MDN";
console.log(window.b); // "MDN"
console.log(b); // "MDN"