SPFX Interview question for 2023

1. SPFx Interview Questions for 2023

2. Question 1: What is SharePoint Framework (SPFx)? Answer: SharePoint Framework (SPFx) is a development model introduced by Microsoft for creating client-side web parts and extensions for SharePoint Online and SharePoint 2019. It is based on modern web technologies like JavaScript, TypeScript, and React, providing a rich and responsive user experience.

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Question 2: What are the key advantages of using SPFx for SharePoint development? Answer: SPFx offers several advantages, such as:

• Responsive and mobile-ready web parts and extensions.
• Seamless integration with SharePoint data and services.
• Support for modern web development practices and tools.
• Easy deployment and hosting options.
• Enhanced security and isolation through the SharePoint app model.

1. Question 3: Can you explain the structure of an SPFx solution? Answer: An SPFx solution consists of the following key components: Web Parts: These are the building blocks of SPFx solutions, representing the visual elements and functionality added to SharePoint pages. Extensions: These allow developers to customize and extend the SharePoint user interface, such as adding custom headers or footers. Assets: These include stylesheets, images, and other resources required for the solution. Configuration: This involves specifying properties, dependencies, and deployment-related settings in the package manifest.

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2. Question 4: How can you connect to SharePoint data from an SPFx solution? Answer: SPFx provides various options to connect to SharePoint data, including: SharePoint REST API: Using RESTful endpoints, developers can read and write data from SharePoint lists, libraries, and other resources. Microsoft Graph API: It enables access to a wide range of Microsoft 365 services, including SharePoint. PnPjs: A JavaScript library that provides a higher-level abstraction for interacting with SharePoint data, simplifying the coding process.

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3. Question 5: How do you handle authentication and authorization in SPFx solutions? Answer: SPFx leverages the standard authentication mechanisms provided by SharePoint Online and Microsoft 365. It supports authentication methods like Azure Active Directory (AAD) and SharePoint App-Only access. Developers can configure permissions in the package manifest to define the required access rights for their solutions.

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5. Question 6: How can you deploy and host SPFx solutions? Answer: SPFx solutions can be deployed and hosted in multiple ways, including: SharePoint App Catalog: Solutions can be packaged as an app package (.sppkg) and deployed to the SharePoint App Catalog for installation by administrators. Azure Storage: By bundling the solution as a static bundle, it can be hosted in Azure Storage and referenced from SharePoint pages. SharePoint Framework Extensions: Solutions can be added to the SharePoint Framework Extensions (e.g., Application Customizers) and deployed directly to the target sites.

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Question 7: How do you ensure the performance of SPFx solutions? Answer: To optimize the performance of SPFx solutions, developers should consider the following practices:

• Code bundling and minification to reduce file sizes and improve loading times.
• Caching strategies for data retrieval to minimize server round trips.
• Asynchronous loading of external resources.
• Lazy loading of components to reduce the initial load time.
• Following best practices for JavaScript and React development to ensure efficient rendering and state management.

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1. Question 8: What is the role of gulp.js in SharePoint Framework development? Answer: Gulp.js is a task runner used in SharePoint Framework development. It automates repetitive tasks such as bundling, minification, and deployment of SPFx solutions. Gulp.js helps in optimizing the development workflow and ensures the correct build and packaging of the solution.

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3. Question 9: How can you test SPFx solutions? Answer: SPFx solutions can be tested using different approaches: Local Workbench: It provides a local development environment for testing web parts and extensions in isolation. SharePoint Workbench: It simulates the SharePoint context and allows testing of solutions within a SharePoint site. Unit Testing: Developers can use popular JavaScript testing frameworks like Jest or Mocha to write and execute unit tests for their SPFx components.

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4. Question 10: What are the key differences between SharePoint Add-ins (formerly SharePoint Apps) and SharePoint Framework? Answer: SharePoint Add-ins and SharePoint Framework have the following differences: SharePoint Add-ins are mainly based on server-side technologies, while SharePoint Framework focuses on client-side development using JavaScript frameworks. SharePoint Add-ins require a separate hosting infrastructure, whereas SharePoint Framework solutions can be hosted directly within SharePoint. SharePoint Add-ins have limited access to SharePoint user interface customization, while SharePoint Framework allows more extensive customization. SharePoint Add-ins are often built using Visual Studio, while SharePoint Framework supports various development environments, including Visual Studio Code.

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5. Question 11: How can you customize the SharePoint user interface using SPFx extensions? Answer: SPFx extensions allow developers to customize the SharePoint user interface in various ways: Application Customizers: These extensions allow adding custom JavaScript or HTML to all pages within a SharePoint site, enabling the addition of headers, footers, or custom branding elements. Field Customizers: Field Customizers enable the customization of field rendering in SharePoint lists or libraries, providing custom UI or behavior for specific fields. Command Sets: Command Sets allow adding custom commands to the SharePoint toolbar or context menus, providing additional actions for list items or documents.

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6. Question 12: What are the localization capabilities in SPFx? Answer: SPFx provides built-in localization support to create solutions that can be easily adapted to different languages and cultures. Developers can leverage the localization framework and resource files to provide translations for their solution's user interface elements, making them more accessible to a global audience.

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8. Question 13: How can you handle versioning and updates in SPFx solutions? Answer: SPFx provides versioning and update capabilities through its package manifest. Developers can increment the version number in the manifest to indicate updates or changes in the solution. When deploying the updated solution, administrators can choose to upgrade existing installations or maintain separate versions side by side.