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There is no doubt how Salesforce has been changing not only the way businesses operate but also how they serve their customers especially with products like Salesforce Lightning. It is a component-based framework for development from SFDC aimed at simplification of processes for business users. Due to its out of box component many top companies like Adidas, Cisco, Accenture among others are using Salesforce Lightning to alleviate their development as well as application performance.
Well, if you are a Salesforce Developer with hands-on experience in the Lightning platform you know job opportunities for certified Salesforce Lightning professionals is plenty, statistically speaking over 5000+ jobs.
So to help you out we have prepared Salesforce Lightning interview questions. We know, every interview is different and requires company-specific preparation in addition to the basic know-how of the interview questions. But, the lightning salesforce interview questions we have designed are especially after considering these factors. Let’s dive in!
Ans:- Lightning refers to a set of tools and technologies which are behind a prominent upgrade to the Salesforce platform.
It has the following components:
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Ans:-Lightning components can be used with the Salesforce1 Mobile App by creating a custom Lightning tab which points to our component and includes that tab in our Salesforce1 Mobile navigation.
Ans:-Lightning Components can be directly used in Lightning Experience, the Salesforce1 Mobile app, template-based communities, and other standalone apps. Additionally, it also includes Lightning components in a Visualforce page, which allows us to use them in Salesforce Classic, Visualforce-based communities and Console.
Ans:-Lightning is a component-based framework.
Ans:-Application Event: The event has a scope that is throughout the lightning App, and any component which has registered for this event gets a notification.
System Event: These are the events that are fired by the Salesforce system during the lifecycle of the app.
Component Event: The scope of this falls within the parent component of this event. All the components declared by the parent will also get notified of this event.
Ans:-Component Events: these are used when the parent and child need to communicate. They make use of bubbling and capture, just like it is used in DOM events. A change in a child component will be communicated to the parent component through the component event.
Application Events: these are basically used for communicating any kind of change in the component to a larger audience. Any component which has been registered for this event will get notified.
Ans:-It is always a good idea to use a component event over an application event. Component events can be handled only by the components which are above them in the hierarchy of containment. Thus, the usage is limited to the components which need to know them.
Application events are best used when something is handled at the application level, like navigating to a particular record. Application events permit any communication between the components which are in separate parts of the application and have no direct containment relationship.
Ans:-Implementation can be done following the “force: lightning-quick action” so that the component can be used for quick action.
Ans:-The lightning component can be used as a Tab by following “force: apps stable.”
Ans:-A Lightning Component can be embedded in any kind of webpage by a highly powerful and flexible feature called the Lightning out. In Visualforce, some level of complexity comes down. Lightning Component can be used in the Visualforce page in three steps:
Ans:-FLS and CRUD have to be manually enforced in the Apex Controller, or it can be done using the Lightning Data service wherever possible as it handles both the FLS and CRUD. Both of them are not enforced automatically in case any object is referenced in the Apex Controller.
Ans:-A lightning tab has to be made, which is aimed at the lightning component which has been created. The tab then has to be included in the salesforce1 Mobile Navigation select list and the newly created tab for it.
Ans:-Lightning Component refers to a lightning experience that is ready by default and also has compatibility in Salesforce1 App. The layout is responsive and thus adjusts as per the resolution of the screen size. Hence, it cannot be used on a desktop and without any separate code.
Ans:-The number of components which can be defined in an application in Salesforce has no upper limit.
Ans:-A namespace is not essential for the development of a lightning component.
Ans:-The Visualforce page is created by keeping it at the center of the application, and most of its calculation is taken up at the server-side. The lightning component, on the other hand, is created by making use of the component-based framework, and most of the calculations are performed at the side of the client. It gives a more dynamic and rich customer experience. The lightning component is built using the mobile-first approach.
Ans:-Salesforce has given the lightning design system as the default CSS which can be used with the Lightning component.
Ans:-Lightning Components are designed with a mobile-first approach, but the responsive design allows it to give the same experience even over the desktop without the need for writing any separate lines of code.
Ans:-Lightning has many advantages like an extraordinary component set which lets fast creation of new apps, and easy decoupling between the components can be enabled by the event-driven architecture. Also, it is endowed with device awareness, cross-browser compatibility, and an optimized framework for performance.
Ans:-Yes, Lightning components can be integrated with any third-party framework like Angular.
Ans:-The lightning component can be displayed in the following places:
Ans:-Lightning components can be deployed to the production by change sets, force.com, IDE, and Managed Package.
Ans:-Lightning Experience refers to the new User Interface, which is developed by the Salesforce team and is built on a component-based framework and architecture driven by events that provide a highly dynamic and responsive experience to the user. This framework is designed to give optimum performance by the Client side and the stateless Server architecture.
Ans:-Implements are basically used for referring to various interfaces of the platform which enable a component for use in different contexts or granting access to extra context data. A component can often implement multiple interfaces.
Ans:-For subscribing to any event in the Lightning component, tags have to be included in the containment hierarchy. Subscription of this event is dependent on the type of event, i.e. component event or application event.
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Ans:-In a Lightning Component Framework, the communication between two components can be accomplished in the following ways:
Ans:-They are like member variables in apex classes, are typed fields and instances of a component. All attributes have been assigned a name and a type that can be marked required by specifying ‘required=true’ and also has a default value. It has a naming rule.
Ans:-That’s it. That’s our list of Salesforce Lightning interview questions. But we don’t know your curisourty hasn’t ended here and you want to know more about the Salesforce career path. So why wait? Read On.
Ans:-There are five major tools that are used by lightning, they include Lightning Component Framework, Lightning App Builder, Lightning Connect, Lightning Process Builder, and the last one, Lightning Schema, Builder.
Ans:- Visualforce components are page-centric where most of the work is done on the server. While lightning is created client-side centric that makes them more dynamic.
Ans:- It is a folder having definition files. This is different from most other metadata components, and instead of a single file, it is a collection of files. Each file contains a resource in a bundle, like a markup, code files, documentation, events, and interfaces.
Ans:- Spinners are CSS loading indicators, you should display them while retrieving data or doing slow computations. Lightning spinner presents an animated spinner image to indicate that a request is loading. This may be used when retrieving data or doing any lengthy task.
Ans:- Value providers encapsulate related values in one and are used to access. There are two value providers in Salesforce lightning- v(View) and c(Controller).
v helps to access component attribute values in markup.
C helps to link with event handlers and action for the component.
Ans:- Visualforce is a framework that allows developers to create complex, creative user interfaces that run natively on the Lightning platform.
. Ans:- FlexiPage represents the metadata associated with a lightning page that depicts an adaptive screen made up of areas including lightning components. The Flexi page is saved as an XML file and deployed through a metadata API and deployment tool
Ans:- The “this” keyword is generally found in Aura and LWC and their uses are very similar. In the LWC, the keyword is used to access any component property or method.
Ans:- When you create an event, represent event propagation behaviour through two properties on the event, composed, and bubbles. A Boolean value indicates if the event bubbles up through the DOM or not. A Boolean value shows if the event can pass through the shadow boundary.
Ans:- There are different ways to approach component debugging, the fastest way is to just provide console logging statements to log variables through the code execution. Another step is to enable Lightning Debug Mode to remove minification and provide better error messages.
Ans:- To use a component as a tab, the following interface is used- force:appHostable.
Ans:- You can easily configure a component for invoking a change handler when the value of attributes in one of the components changes.
Ans:- This is a strong and flexible feature, allowing you to embed the Lightning web elements on any web page. When you are using this, you do not have to deal with authentication or configure a connected app.
Ans:- Attributes are the variables that are used to store values. They are generally defined by name, description, type, etc. With attributes, there are two parameters required- name and type.
Ans:- It can be assigned in different ways:
Ans:- There are two phases for component event propagation after the event fires- capture phase and bubble phase.
Ans:- It is an innovative and lightweight stack designed to align with the newer standards.
It makes working with components faster.
LWC has proven better component performance as well.
Ans:- There is no limit regarding how many components are allowed in an app.
Ans:- There are three record page types in Lightning: 1. Home Page 2. Record Page 3. App Page.
Ans:- LDS is used for caching purposes. It allows uploading, adding, modifying or deleting a component’s records using Apex code from the server-side.
Ans:- Lightning Components can be used with the Salesforce1 mobile app by creating a traditional Lightning tab that refers to the component. That tab can be added to the Salesforce1 mobile navigation. This is an important answer to these kinds of salesforce lightning interview questions and answers.
Ans:- Record page, App page, and Homepage are the different types of Lightning record pages and they can be built using Lightning App Builder.This is an important answer to these kinds of salesforce lightning interview questions and answers.
Ans:- Lightning out is used if a component has to be used on the external site. The advantage is that Lightning components can be utilized in a visual force page. It acts as a bridge to surface Lightning components in any remote web container This is an important answer to these kinds of lightning interview questions and answers.
Ans:- Using Lightning Out can help embed the Lightning component on the VisualForce page. It can be achieved in three steps:
Ans:- Attributes are variables that are used for storing values. The Default, Type, Name, Access, and Description must be defined in the attribute definition. Name and Type are the only required parameters in the attribute definition.This is an important answer to these kinds of salesforce aura interview questions and answers.
Ans:- Component event is used for interaction between the parent and child. The change in the child component can be communicated to the parent component through the component event.
Application events are used to send modifications in the component to a wide audience. The components that have registered for this event will get an alert. This is an important answer to these kinds of salesforce lightning interview questions and answers.
Ans:- The Namespace is used to group components together and can be created through an organization. The Lightning components are a part of a namespace. C is the default namespace.
If the namespace is created for an organization, then that namespace can be used for the Lightning components.This is an important answer to these kinds of salesforce lightning interview questions and answers.
Ans:- Lightning components can be used in the following places:
This is an important answer to these kinds of lightning scenario-based interview questions and answers.
Ans:- Component events act as a means of communication between a parent and a child. A change in the child component can be communicated to the parent component using Component Events.
Application Events communicate changes in the component to a much bigger audience. All the components that have registered for the event get notified about the change. This is an important answer to these kinds of salesforce lightning scenario-based interview questions and answers.
Salesforce Lightning is basically designed to simplify processes for various business users who typically do not have any kind of programming experience. It has a huge scope, and thus, the interview preparation needs to be done with a lot of care and seriousness.
There are many aspects which have to be touched and We hope the list of Salesforce Lightning interview questions will assist you in your interview. The lightning salesforce interview questions mentioned above if done properly will definitely give you an edge over other participants. The only part of an interview is the preparation, which is in your control. As it is said, control the controllable so you should put in all the efforts to make sure that there is nothing left undone in your preparation and you enter the interview room loaded with confidence.
If you still need more help in Salesforce Lightning interview questions or to know the platform more clearly, then we’ll be more than happy to assist you! Just drop a comment or ring us and we will provide you with Salesforce consulting and our professional career expertise!
This is Puja Bhardwaj, a creative writer, and content strategist. I’m passionate about storytelling through written and visual content, and market that content for cultivating a committed audience. I come to the table with 5 years of content writing and marketing experience (in the agency, in-house, and freelance writing).
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