CODEWITHSUNDEEP
javascript
manan5439
manan5439

Reputation: 958

call function in object without accessing object property

here i have a confusion i create object called obj obj has a key first. a first key has a key second now when i interpret below program its called function hello() and give output on console hello. without accessing object property like obj.first.second. i didn't understand whats going on

or is there any way to prevent function call before accessing object property.

var obj ={
first:{
    second:hello("hello")
  }
}
 
 //obj.first.second

function hello(url){
   console.log(url)
 }

any help would be appreciated

Upvotes: 0

Views: 71

Answers (2)

user9990237
user9990237

Reputation:

you can also use getter with define your objects with class.

here is an example

class Rectangle {
      constructor(height, width) {
        this.height = height;
        this.width = width;
      }
      // Getter
      get area() {
        return this.calcArea();
      }
      // Method
      calcArea() {
        return this.height * this.width;
      }
    }

    const square = new Rectangle(10, 10);

    console.log(square.area);

Upvotes: 0

Jonas Wilms
Jonas Wilms

Reputation: 138307

Seems like you are looking for a getter, that gets executed when you access the property:

 var obj = {
  first: {
     get second() { hello("hello") }
   }
};

 function hello(url) {
   console.log(url);
 }
 // Now here hello gets called:
 obj.first.second

Upvotes: 2

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