The goal of a closure function is to enable access to private data defined in the outer function. In other words, to achieve encapsulation. Before the release of JavaScriptclasssyntax, using a closure is the main method to implement encapsulation. Here’s an example of a closure function from...
Let's discuss the need for encapsulation in JavaScript via the following example.For example, you have defined the below object in your code.const car = { Brand: "Honda city", model: "sx", year: 2016, } Anyone can access the properties of the car object, as shown below....
Let’s consider a simple example of a washing machine; in this scenario, we just switch on the machine’s power button, and the machine gets started, and after some time, we switch off the power button of the machine, then the machine stops. The final conclusion of this scenario is tha...
With the way the code is written in the above example, we can’t call “person.getFullName().” Nor for that matter could we call “person.theObj.getFullName(),” since all of the variables, including “theObj” are private to the function. Thankfully the solution is simple: return ...
It is not mandatory to use only this kind of encapsulation in terms of members and variables but can also make use of functions and sections also encapsulated. Example: This example demonstrates the member type encapsulation where the student roll no is considered, and then the variable is manip...
Example: letcircle = (function(radius){letdiameter = radius *2;return{area:function(){returnradius * radius *Math.PI; },circumference:function(){returndiameter *Math.PI; } } })(3);console.log("Area is "+ circle.area()); https://developer.mozilla.org/en-US/docs/Glossary/IIFE ...
//developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap">WeakMapobjects to store the private members. The penalty is avoided since oneWeakMapcan be used to store private members of multiple instances of the class. Let’s look at the example to understand the concept...
In Java, encapsulation helps us to keep related fields and methods together, which makes our code cleaner and easy to read. It helps to control the values of our data fields. For example, class Person { private int age; public void setAge(int age) { if (age >= 0) { this.age =...
Code Box 6-5: Constructing a client object in JavaScriptAs you see in this example, on the 2nd line, we create an empty object. In the following two lines, we add two new attributes, name and surname, to our object. And on the following line, we add a new method, orderBankAccount...
Example #include <iostream>using namespace std;class Employee { private: // Private attribute int salary; public: // Setter void setSalary(int s) { salary = s; } // Getter int getSalary() { return salary; }};int main() { Employee myObj; myObj.setSalary(50000); cout << myObj....