Objects / Methods
Methods
A function that is the property of an object is called method.
/**
* In JavaScript actions are represented by
* functions in properties
*
* We can use a shorthand syntax () {}
*/
let A = {
name: "John",
age: 30,
hello() { // same as "sayHi: function()"
console.log("Hello");
}
};
A.world = function() {
console.log("World");
};
A.hello(); // Hello
A.world(); // World
This
Sometimes object method needs to access object properties.
/**
* To access the object itself, a method uses
* this keyword
*
* Arrow functions have no this,
* it is taken from the outer normal function
*/
let A = {
name: "John",
sayHi() {
console.log(
this.name // Look Here
);
}
};
let B = {
name: "Ilya",
sayHi() {
let c = () => console.log(this.name);
c();
}
};
A.sayHi(); // John
B.sayHi(); // Ilya
Last update: 61 days ago
