Understanding Class Constructor and Static in JavaScript
When it comes to object-oriented programming in JavaScript, understanding how class constructors and static work is essential. Let’s dive into the concept and how it can be implemented in your code.
Class Constructor
A class constructor is a special method that is called when a new instance of a class is created. It is used to initialize the properties of the object and can also take in parameters to set the initial state of the object. In JavaScript, the constructor method is defined using the keyword constructor within a class.
Here’s an example of a class constructor in JavaScript:
“`javascript
class Car {
constructor(brand) {
this.brand = brand;
}
}
const myCar = new Car(‘Toyota’);
console.log(myCar.brand); // Output: Toyota
“`
In this example, the Car class has a constructor that takes in a parameter brand and initializes the brand property of the object with the value passed in when creating a new instance of Car.
Static
The static keyword is used to define a static method or property for a class. Static methods and properties are associated with the class itself rather than instances of the class. This means they can be called directly on the class without requiring an instance of the class. In JavaScript, static methods and properties are defined using the static keyword within a class.
Here’s an example of a static method in JavaScript:
“`javascript
class MathUtils {
static add(x, y) {
return x + y;
}
}
console.log(MathUtils.add(2, 3)); // Output: 5
“`
In this example, the MathUtils class has a static method add that takes in two parameters and returns their sum. The method is called directly on the class without requiring an instance of the class.
Conclusion
Understanding class constructors and static methods in JavaScript is important for creating and working with classes and objects in an object-oriented manner. By using class constructors, you can initialize the properties of objects, and by using static methods, you can define methods that are associated with the class itself.
Both Sir classes and ChatGPT 🔥🔥
Your brilliance in simplifying intricate concepts and the humor you infuse into lessons create an incredibly enjoyable and enlightening learning experience. Thank you for making each class uniquely engaging!
Sir apne mistake New key word ki ki hai 😄
I have a habit of Liking your every video before watching
Another crystal clear video, thank you sir
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Thank you so much sir 😊
Thank you so much sir 😊
Dhanayavad Guru G🚩✌
Sir baat baat me dhamki na Diya Karo hum to padh hi rhe hai 😅
But sir itna yaad ni rahta 😢
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jod!!
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Awesome Series And Awesome Teacher ❤👑
thanku sir
course dusre ka buy kiya hai or doubt yaha clear kr raha hu , ye aadmi aapko javscript se pyar kara denga
thanku sirji
Amazing content
the mus==istake was not using new keyword
Object name should be relevant to class name so that the freshers could understand in a clear way and build more understanding of concept.