Vf Page Interview Questions
Popular Interview Questions for Visualforce Pages
Vf Page Interview Questions
VF page interview questions often cover a range of topics such as understanding the structure of Visualforce pages, the various tags and components available, how to use controllers and extensions, handling data with Apex, integrating with JavaScript and CSS, and best practices for performance optimization and security. Interviewers may also ask about your experience with custom controllers, extensions, standard controllers, action components like <apex:commandButton>, and formatting using Visualforce components. Being familiar with common Visualforce design patterns, troubleshooting techniques, and integration with other Salesforce features like Apex classes and triggers is also important. Practice coding scenarios and understanding platform limitations to effectively demonstrate your proficiency in developing Visualforce pages during the interview.
To Download Our Brochure: https://www.justacademy.co/download-brochure-for-free
Message us for more information: +91 9987184296
1 - What is a Visualforce page? Visualforce is a framework that allows developers to create user interfaces for Salesforce applications. It uses a tag based language similar to HTML to design the layout of the pages that interact with the Salesforce database.
2) How do you display data in a Visualforce page? Data can be displayed on a Visualforce page using Apex controllers. The controllers define the logic for the page and retrieve data from the database to be displayed to the user.
3) What are the different types of bindings in Visualforce? There are two main types of bindings in Visualforce – data bindings and component bindings. Data bindings connect the page elements to the data stored in the Salesforce database, while component bindings connect the Visualforce components to the controller.
4) How can you pass parameters from one Visualforce page to another? Parameters can be passed between Visualforce pages using the URL parameters. You can set parameters in the URL of the source page and retrieve them on the destination page using the Apex controllers.
5) What is the difference between standard controllers and custom controllers in Visualforce? Standard controllers are used for standard Salesforce objects like Account, Contact, etc., while custom controllers are used for custom Apex classes created by the developer. Standard controllers come with pre built functionality for CRUD operations, while custom controllers provide more flexibility in terms of customization.
6) How do you include JavaScript in a Visualforce page? JavaScript can be included in a Visualforce page using the `<apex:includeScript>` tag. This tag allows you to reference external JavaScript files or include inline JavaScript directly within the Visualforce page.
7) What is the purpose of Visualforce components? Visualforce components are reusable elements that can be included in multiple Visualforce pages. They help in modularizing the code and promoting code reusability across different pages.
8) How can you make a Visualforce page responsive? To make a Visualforce page responsive, you can use CSS media queries to adjust the layout based on the screen size. By applying responsive design principles, you can ensure that the page looks good on various devices.
9) What is the difference between apex:page and apex:component in Visualforce? `apex:page` is used to define a Visualforce page that will be displayed to the user, while `apex:component` is used to define a reusable component that can be included within Visualforce pages. Components allow for better code organization and reusability.
10) How can you render different sections of a Visualforce page based on user permissions? You can use Visualforce's built in rendering functionality like the `<apex:outputPanel>` tag with the `rendered` attribute to conditionally display sections of a page based on the user's permissions. By checking the user's profile or permission sets in the controller, you can control which parts of the page are shown to different users.
Browse our course links : https://www.justacademy.co/all-courses
To Join our FREE DEMO Session: Click Here
Contact Us for more info:
- Message us on Whatsapp: +91 9987184296
- Email id: info@justacademy.co
Asp Net Interview Questions For 1 Years Experience
Interview Questions Multithreading Java
