I have written previously about private methods. It is important to understand how JS deals with private and public versus privileged objects. I plan on doing a post in the future about closures as those are a key way to handle the protection of your code, yet exposing what the
Sometimes, we need methods in our constructor that do some work only in the constructor. There might be some internal maintenance that needs to be done. We might simply want to protect some data, etc. We declare a private method by using an inner function. If we try to run
In classical OOP languages, getters and setters seem to get set up as a normal way of creating classes. In JavaScript, we have to be intentional in setting them up. What we have to do is create a constructor and within the constructor, we create functions that perform the getting
In the last post, I briefly discussed JS constructors. In that post, I showed how to create an instance of a constructor with the new operator. Our constructor was rather ‘blah’. So let’s see how we can access constructor instance properties and methods. The aforementioned constructor code gives us a
If you come from a classical object-oriented language, then constructors are second nature to you. They are a recent phenomenon in JS. If you utilize something like TypeScript, which is a superset of JS, then you utilize constructors all the time. In vanilla JS, constructors are simply function objects. This
Angular structural directives allow us to change the DOM structure (hence the name). In Angular, we use the *ngIf as a structural directive. Basically, if it evaluates to ‘true’, then the element is inserted into the DOM. If it is ‘false’, the element is removed. The above div would be
