[wp_ad_camp_1] If you’ve read this, it merely declares JavaScript can do OOP. It did not talked about other (more advanced) OOP stuff like access modifiers, encapsulation – behaviors and properties, and inheritance. On this article, we’ll talk more on object
JavaScript Static Properties and Methods
In JavaScript Object Creation and Object Methods and Properties, we talked about methods and properties that are tied to an object. Without an object, these properties are unusable and inaccessible to other codes. There is another type of members – static methods and properties. These are only accessible via the class itself. These are even inaccessible if referenced via objects.
Inheritance in Object-oriented JavaScript
Inheritance in JavaScript is called prototypal inheritance. Objects inherit from objects. When we create an object from a class, [wp_ad_camp_5]
1 2 3 4 5 6 | function MyClass() { // The class }; var myObject = new MyClass(); |
it always inherits from
1 | MyClass.prototype |
In Java speak, this is like saying “any class inherits from Object class”.
1 2 3 | public class MyClass extends Object { ... } |
Check if a value is in an Array in JavaScript
Given an array of strings, we want to know if a particular string value is in that array. Here we’ll use the Array object’s .indexOf function.
JavaScript scope in functions vs Java scope in methods
For years, JavaScript to me was a mere validation tool or script for web applications. I hated it. I avoided using it. This time JavaScript gets the same respect from me as Java does. If you plan to “own” (or master if you can) JavaScript and you are coming from blocked-scoped languages like Java, C#, C and C++, this is one of key things you need to keep in mind…
Convert TypeScript to JavaScript
This post demonstrate the basic process of converting TypeScript codes to JavaScript.