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As a Salesforce developer or a beginner, it would be better for you to get all the insights about Lighting and its related components to shine bright in the interviewer’s perspective. Reading out the below-mentioned Salesforce lightning interview questions will surely provide you with in-depth information and boost your confidence. So, let’s jump in.
Key Takeaways
- Master essential Salesforce development skills to confidently tackle Lightning interview questions.
- Gain hands-on experience with real-world projects and practical exercises.
- Prepare for the Salesforce Developer Certification and boost your career prospects.
Basic Salesforce Lightning Interview Questions
If you are new to Salesforce development, you can start with some basic questions related to the meaning and benefits of Salesforce Lightning and its related terms.
1. What is Salesforce Lightning?
Salesforce Lightning is the modern framework and UI that upgrades the performance and usability of Salesforce applications. It is possible to build fast and responsive apps through pre-built Lightning components, which gives a more user-friendly experience.
2. What are Lightning Components?
Lightning Components are building blocks of Salesforce Lightning applications. These are reusable pieces of code encapsulating functionality that help in the easy creation of responsive interfaces. Developers use these to create custom pages, dashboards, and apps.
3. What is Salesforce Lightning compared to Salesforce Classic?
Better and Modern UI: Lightning provides a more intuitive interface than Classic.
App Builder: Lightning allows you to develop apps using drag-and-drop features.
Mobile Optimization: Lightning apps are optimized for mobile devices.
Component-based architecture: Classic is based on Visualforce, whereas Lightning uses reusable components.
4. What are some advantages of using Lightning Components?
- Reusable: Components are used and reused in a multi-app and multi-page view
- Faster development time: It takes much shorter to build apps when reusing pre-built components.
- Responsive Design: It helps render better on any type of device used
- Better Performance: These components load dynamically, that is why it provides better performance.
5. What is Lightning App Builder?
Lightning App Builder is a drag-and-drop interface that allows you to create custom apps. Assemble pages using standard or custom Lightning components without having to write complex code.
6. Can you explain how the Lightning out?
If we wish to use our component on an external site, we must use Lightning Out. The benefit of Lightning Out is that we can use lightning components in a visual force page.
7. How do we integrate Lightning components with the Salesforce Mobile App?
We can use Lightning Components with the Salesforce mobile app by generating a typical lightning tab that references the component, which we can then add to the Salesforce navigation.
8. What is the best way of deploying a lightning component inside a VisualForce Page?
Lightning out can be placed on the VisualForce page. The lightning Component of the Visual force Page will be inserted in Three stages.
- First, this is through the insertion of the lightning component to the visual intent force page of our interest through the tag:
- After that, we can create and reference a lightning app that we are using for the component dependencies.
- Lastly, we have to write a javascript function that creates the component over the page through $ Lightning.createComponent().
9. What are the different types of Lightning pages, and how can we build them?
By using Lightning App Builder, we can build the lightning pages by going to App Builder from Quick Find Box. There are different types of lightning pages, which are:
- Record page
- App page
- Home page
10. What programming models are available for Lightning components?
There are two ways to develop your Lightning component. You could use the Aura framework, build out your Aura component, and go from there. The newer Lightning Web Components (LWC) is another method.
Advanced Salesforce Lightning Interview Questions
These are some advanced Salesforce Lightning interview questions that you should read out to get detailed information.
11. What is Aura, and what is the use of Aura: namespace?
Aura is freeware technology that powers lightning components. Aura: The namespace is made of all the building blocks necessary to define both applications and components.
12. What are Aura Components?
Aura Components are the original components in Salesforce Lightning. However, these are being gradually substituted by Lightning Web Components (LWC) for better performance and modern standards. It falls under the Lightning Component Framework.
13. What is the use of the Lightning App Builder to create an app?
The Lightning App Builder is a drag-and-drop application that lets users build pages from standard or custom components. Pages can be developed relatively easily with minimal code.
14. Do we mix Aura and LWC components?
YES. You may nest an LWC within an Aura, which ensures backward compatibility. However, you cannot embed an aura inside an LWC.
15. How can we communicate between components in Lightning?
In different ways, you could carry out communication in parts through Lightning.
- Parent-Child: Using attributes to pass data between parent and child components.
- Events: Aura events or LWC events are used for component-to-component communication.
- Pub-Sub Model: A publish-subscribe pattern can be used for communication when components do not share a direct relationship.
16. How can we share code between our components?
We use a service component to share code between Aura components. A service component is an Aura component that uses the “aura:method” to expose the pieces of code to be shared. This component can then be included in other components.
It can be much easier for us to create EcmaScript Modules for LWC. These are essentially JavaScript files that use the “export” keyword to export a selection of functions or variables that we have defined. Such modules can then be imported in the same way in which we import Salesforce modules and are freely used by our component.
17. What is an Action provider and Value provider?
The action provider enables the management of events, actions, and handlers by the component.
The value provider helps to utilize the component attribute value in both the component JavaScript and the markup controller.
18. Explain Scratch org.
Scratch.org is an extensible salesforce.org. We can use it for testing and development purposes. Once created, we can use the scratch org for 30 days and then deactivate it. The default lifespan of scratch org is seven days.
19. How do we show a loading spinner inside the Lightning component?
The spinners are the CSS indicators that we should display while fetching the data or doing some slow calculations. Lightning: spinner shows the animated spinner image to indicate that a request is loading.
We can use Aura: donewaiting and Aura: waiting to control the loading spinner.
20. What are the key skills required for a Salesforce development role focusing on Lightning?
The following skills are essential for a role focused on Lightning development:
- Proficient with JavaScript, HTML, and CSS, especially LWC.
- Knowledge of Aura and Lightning Web Components
- Adequate knowledge of Salesforce tooling, App Builder, and Developer Console
- Skills in Apex and LDS.
- Knowledge of Salesforce security features-Lightning Locker Service.

Winding Up
These Salesforce Lightning interview questions will give you an edge in your Salesforce job interview and help you stand out as a skilled developer. Make sure you practice using tools like Developer Console, App Builder, and Lightning Web Components (LWC) to get practical experience. With these questions and answers, you will be well-prepared to tackle any Salesforce technology question in your interview.
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