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Introducing The Concepts of DOM Events in JavaScript

"Lucinda Heyes" (2020-04-21)


Events are the backbone of the JavaScript applications. Everything is based on the scripts. Among different JavaScript events, DOM is a programming interface for HTML documents. In the entire perception, a data object model represents the element nodes inside a tree. Further, it allows the programming language to register for event handlers and connect to the web page. Moreover, it states that without event handler no one can add JavaScript to the web pages.

What is DOM?

It is a programming interface that helps in manipulating a webpage. A document object model allows the user to develop different documents and modify their structure. It means a DOM is a representation of a page which can further be changed using JavaScript. In creating web pages, all the methods and events are available in form of organized objects. So, we can use the objects in order to access the information about the events that have occurred.

Accessing Event Interfaces Using DOM

Under the occurrence of an event, a DOM object is created and passed to the event listener. Here the object document defines the web page. It is a hierarchical representation of Nodes. However, there is always a dire need to access the object if a user wants to access the elements of the web page. Accessing elements using DOM allows the developer to represent content via different properties and methods.

DOM Methods for Finding HTML Elements



There are basically three types of methods to access the HTML elements.



Concepts of DOM Events in JavaScript




getElementById()


It is the easiest method to access the element from the DOM. It basically finds the element by using an "id" attribute within the specified value.


getElementsByTagName()


Another method is to access the DOM elements directly. Usually, it takes the tag name as an argument to search the nodes in the document.


getElementsByClassName()


This method is quite similar to "getElementsByClassName()" as it returns the elements with the use of the specified class name.

One of the main purposes of using DOM events is to offer standardized programming interface for building JavaScript application. These events are also helpful in solving the complications in JavaScript coding. CodeFights is an effective platform for computer coding practice and prepares you well for technical interviews. Explore the new dimension of enhancing your coding skills with CodeFights.











The author of this article is a programming enthusiast who helps learners to easily understand the concept of Javascript & iPad touch event.identifier is continually incrementing through reliable content. You must keep watching this space and remain updated with all new JS outlines. Follow the guidelines and do coding practice to get into tech jobs easily.