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What is the definition of encapsulation in JavaScript?
Encapsulation is the bundling of data and the methods that act on that data such that access to that data is restricted from outside the bundle, or as Alan Kay describes it, “local retention and protection and hiding of state-process.”
How does encapsulation in OOP work in JavaScript?
In OOP, that means that an object stores its state privately, and only the object’s methods have access to change it. If you want to change encapsulated state, you don’t reach out and directly mutate some object’s props. Instead, you call a method on the object, and maybe the object will respond by updating its state.
Is there a global or local scope in JavaScript?
JavaScript variables have either function scope, or global scope. There is no block scope. Enclosing your code in a self invoking function like the one in your example creates a temporary local scope for single-use, immediately-run code, without polluting the global namespace.
How does encapsulation work in object oriented programming?
Encapsulation, one of the principles of Object-Oriented Programming is the key to achieve such goals. By definition Encapsulation in JavaScript is a process of binding the data with the functions which act upon the data. Encapsulation allows us to control and validate the data.
Why are external JS libraries not working in JavaScript?
The external library might perform DOM queries or updates which would not be able to access the shadow-dom of the web component that is using them, so the external library might not actually work at all, or might update the hosting page’s DOM again breaking encapsulation.
How to add external JavaScript to a component?
If you want to use a external JavaScript library inside your component, you can do so by importing the package and requiring it once the Vue components are mounted. If you want scripts to be globally available you can add them to src/main.js.