February 5, 2022 In this article on Working with Arrays in JavaScript, I will explain how to create and use arrays in JavaScript. Certainly, you will find lots of examples of JavaScript arrays here. For the purpose of creating an array, we can initialize it with values. Also, we can use the Array() constructor. The following examples demonstrate how to […]
In this article, I will explain Creating User-Defined Functions in javaScript. Since many times we need to use the same program statements at several places in a program. Therefore, we create functions that perform a specific task. These functions are called user-defined functions. Once, we have a function for performing a specific task, we can use it anywhere in the […]
The following example demonstrates how the Popup Boxes in JavaScript work. Basically, JavaScript offers three popup boxes. In order to display a warning message, we use the alert popup box. It displays a warning message along with an OK button. In order to proceed further, the user requires to press the OK button. Similarly, we have another popup box called […]
In this article on Creating Classes in JavaScript, I will explain how to create and use classes in JavaScript. In fact, ES6 introduces classes in JavaScript. Basically, a class encapsulates data and associated methods. The following code shows the syntax of a class in javaScript. Syntax of a JavaScript Class Examples of Creating Classes in JavaScript the following section provides […]
This article explains HTTP Requests and Responses. In order to get data from another server HTTP Requests are made. Basically, these requests occur between API endpoints. API End Points Generally, two servers interact with each other using web services. So, one of the servers is making a request for a resource. While the other one has the resource at a […]
In general Asynchronous JavaScript lets the code execute immediately without blocking. For the purpose of understanding this concept let us assume that we have two statements in sequential order in a code. While the first statement being executed, the second one will wait for it to finish. It is known as synchronous execution. On the other hand, if the second statement starts executing while […]
The following section demonstrates a JavaScript Code for Event Handling. Before discussing the code, let us understand, how the event handling is done in JavaScript. Event Handling in JavaScript As a result of the user’s actions, a variety of events may occur on a web page. While, it is necessary that some action should be done in response to those events, sometimes it becomes […]
Basically, Callback Functions in JavaScript provide us a way to pass a function as a parameter to another function. In fact, callback functions are very useful in performing asynchronous operations and registering an event listener. Examples of Callback Functions in JavaScript As an illustration, the following is an example of a simple callback function that just returns a string. In […]
Basically, Arrow Functions in JavaScript provide us a way to simplify coding the user-defined functions. Further, they let us define anonymous functions. Since, arrow functions provide us a way to write shorter syntax, by including arrow functions in script single statement functions can be created fast and prevent unnecessaey coding. However, there are certain differences with the use of arrow […]
The following section provides several JavaScript Code Examples. addEventListener() Sometimes we want to attach an event listener to an HTML element dynamically. For this purpose, we can use the addEventListener() method. Even, it is possible to attach an event listener to a paragraph or div element. See Example. appendChild() Basically, this method helps us to append a child HTML element to an existing […]