Salesforce Lwc Interview Questions
Top Salesforce LWC Interview Questions for Success
Salesforce Lwc Interview Questions
Salesforce Lightning Web Components (LWC) interview questions typically cover topics such as component lifecycle methods, event handling, communications between components, data binding, and Salesforce-specific features like Lightning Data Service and Apex integration. Interviewers may also inquire about best practices in developing LWCs, security considerations, and the difference between LWC and Aura components. It is advisable for interview candidates to have a strong understanding of JavaScript, HTML, CSS, and Salesforce development concepts, as well as practical experience in building LWCs.
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1 - What is Lightning Web Components (LWC)?
Lightning Web Components are a modern method of building Lightning components on the Salesforce platform using standard web components. They enable better performance and are easier to develop compared to Aura components. LWC leverages modern JavaScript features and standards.
2) How are Lightning Web Components different from Aura Components?
Aura Components are the older technology used in Salesforce for building custom UIs, while LWC is the newer framework based on web standards. LWC provides a more efficient and robust development experience, with better performance and reusability of components compared to Aura Components.
3) Explain the Life Cycle Hooks in Lightning Web Components.
Lightning Web Components have several life cycle hooks like connectedCallback, disconnectedCallback, render, and others that allow developers to write code that runs at specific stages of the component lifecycle. These hooks provide a way to handle component initialization, data updates, and interactions with the DOM.
4) How can data be passed between components in Lightning Web Components?
Data can be passed between components in LWC using properties, events, and the pub/sub module from the Lightning Message Service. Properties allow parent components to pass data to child components, events enable communication between unrelated components, and the pub/sub model facilitates communication between any components on a page.
5) What are the advantages of using Lightning Web Components?
Some of the advantages of using Lightning Web Components include better performance due to the lightweight DOM, improved developer productivity with modern JavaScript features, enhanced reusability of components, and seamless integration with other development technologies. LWC also aligns well with the future direction of web standards and frameworks.
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