Introduction of Aura Component

  • By Komal Wavare
  • August 21, 2023
  • Salesforce
Introduction of Aura Component

Introduction of Aura Component

Salesforce, the renowned cloud-based CRM platform, provides a wide range of tools and frameworks to develop robust applications. Among these, Aura Components stands out as a powerful framework for building dynamic and interactive user interfaces. In this blog post, we will delve into the world of Aura Components in Salesforce, exploring their key features, architecture, and benefits. Whether you are a developer new to Salesforce or an experienced professional looking to enhance your skills, this guide will equip you with the knowledge needed to leverage Introduction to Aura Component effectively.


I. Understanding Aura Components 

Aura Components are the building blocks of the Salesforce Lightning Component framework. They enable the creation of reusable, modular UI elements that can be combined to build complex applications. These components follow a hierarchical structure, with a parent component containing child components, forming a component tree. Aura Components have two parts: the client-side framework and the server-side Apex controllers. This separation of concerns allows for efficient data retrieval and processing, resulting in better performance. These components are created using a combination of markup, JavaScript, and CSS, making them versatile and easy to maintain.

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Key Features of Aura Components

2.1. Component-Based Architecture

Aura Components follow a component-based architecture, where developers can build self-contained units of functionality. These components can be combined to create complex and feature-rich applications. The modular nature of Aura Components promotes code reusability and simplifies maintenance.


2.2. Event-Driven Programming

Communication between Aura Components is facilitated through events. Components can fire events and handle events raised by other components. This decoupled communication allows for seamless integration and flexibility within the application.


2.3. Lightning Design System (SLDS)

Aura Components are built on the Lightning Design System (SLDS), which provides a set of CSS styles and design guidelines to create a consistent and visually appealing user interface. This ensures that components look native to the Salesforce platform and enhances the user experience.


II. Creating Aura Components

3.1. Component Bundle Structure

An Aura Component is structured as a bundle, containing a markup file (.cmp), a JavaScript controller file (.js), a client-side controller file (.controller.js), and a style file (.css). The bundle also includes helper files, documentation, and design resource files.


3.2. Component Markup

The markup file defines the structure and layout of the component. It uses a custom syntax that resembles HTML but has additional features specific to Aura Components.


3.3. Component JavaScript Controller

The JavaScript controller handles client-side logic for the component. It contains methods that are executed in response to user interactions or events.


3.4. Component Server-Side Controller

Aura Components can also communicate with the server to fetch data or perform server-side actions using Apex controllers.

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III. Architecture of Aura Components 

Aura Components follow a component-based architecture, where each component has its own markup, JavaScript controller, and helper functions. The component markup defines the structure and appearance, while the controller handles the component’s logic and interacts with server-side Apex controllers.


Components can be categorized as:


Lightning Base Components: Salesforce provides a set of pre-built Lightning Base Components that serve as the foundation for building Aura Components. These components offer a wide range of functionality, such as data input, display, navigation, and more.


Custom Components: Developers can create their own custom Aura Components by extending or combining the Lightning Base Components. This allows for the creation of tailored components to suit specific application requirements.

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IV. Benefits of Aura Components 


Increased Productivity: Aura Components enable developers to build applications faster by leveraging pre-built components and the declarative development approach.


Scalability: The modular and reusable nature of Aura Components promotes scalability. Developers can easily add or modify components without affecting the entire application, enhancing maintainability.


User Experience: Aura Components offer a rich and interactive user experience, with responsive design and seamless communication between components. This leads to higher user satisfaction and engagement.


Compatibility: Aura Components are compatible with multiple Salesforce platforms, including Salesforce Classic and Lightning Experience. This allows for seamless integration with existing applications and a smooth transition to newer platforms.


Use Cases of Aura Components

5.1. Custom User Interface

Aura Components are commonly used to build custom user interfaces tailored to specific business needs. This allows organizations to provide a unique and personalized experience to their users.


5.2. Visualizing Data

Developers can create interactive charts, graphs, and dashboards using Aura Components to visualize data in a user-friendly manner.


5.3. Integration with External Systems

Aura Components can be integrated with external systems through APIs, enabling seamless data exchange and expanding the capabilities of Salesforce applications.


5.4. Mobile App Development

Using the Salesforce Mobile SDK, developers can use Aura Components to create mobile app.

Aura Components provide a robust and flexible framework for building powerful user interfaces in Salesforce. With their reusability, event-driven architecture, and scalability, developers can create visually appealing and interactive applications while maintaining high productivity. By leveraging the benefits of Aura Components, organizations can deliver exceptional user experiences and drive business success. 


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Aura Component Example:

Component Name: HelloComponent


Create a new Aura Component file named “HelloComponent.cmp” with the following code:



    <aura:attribute name=”name” type=”String” default=”World”/>


    <h1>Hello, {!}!</h1>


    <lightning:button label=”Change Name” onclick=”{!c.changeName}”/>


Create a new JavaScript controller file named “HelloComponentController.js” with the following code:




    changeName : function(component, event, helper) {

        component.set(“”, “Salesforce”);



Now, you can use the “HelloComponent” in any Lightning page or app. For example, create a new Lightning App page named “HelloApp” and add the following code:






Save all the files and navigate to the Lightning App page named “HelloApp”. You should see a heading saying “Hello, World!” and a button labeled “Change Name”.

When you click the “Change Name” button, the name attribute will be updated to “Salesforce” using the JavaScript controller’s changeName function. As a result, the heading will change to “Hello, Salesforce!”.


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This is a simple example of an Aura Component in Salesforce. It displays a greeting message with a customizable name attribute. Clicking the “Change Name” button updates the name attribute, reflecting the updated value in the greeting message. Aura Components provide a powerful and flexible way to build dynamic and interactive user interfaces in Salesforce. Unleash your potential with comprehensive Salesforce Training in Pune!. Master CRM, automation, and app development



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