Frontend and WordPress Interview Questions
HTML Questions
- What is the difference between div and span?
- Explain semantic HTML. Why is it important?
- How do you optimize a webpage for SEO (Search Engine Optimization)?
- What are the new features introduced in HTML5?
- How would you include an external stylesheet in your HTML file?
CSS Questions
- What are the differences between relative, absolute, fixed, and sticky
positioning?
- What is the difference between em, rem, %, and px units in CSS?
- Explain the concept of Flexbox and its key properties.
- What is the difference between inline, block, and inline-block elements?
- How do CSS Grid and Flexbox differ, and when would you use each?
- How do you apply styles to an element that has no ID, class, or other
selector?
JavaScript Questions
- What is the difference between var, let, and const?
- Explain the concept of closures in JavaScript.
- What is event delegation, and why is it useful?
- How do you optimize the performance of a JavaScript-heavy application?
- What are Promises, and how do they differ from callbacks?
- Explain debouncing and throttling in JavaScript.
- What is the DOM, and how can you manipulate it using JavaScript?
Frameworks and Libraries (React, Angular, Vue, etc.)
- Explain the virtual DOM in React.
- What is the difference between functional components and class components in
React?
- What are React hooks, and how are they used?
- In Angular, what is the purpose of services, and how are they used?
- Explain two-way data binding in Vue.js or Angular.
- What is the purpose of state management libraries like Redux or Vuex?
Performance Optimization
- How do you improve the performance of a website?
- What is lazy loading, and how is it implemented?
- Explain the concept of Critical Rendering Path.
- How does a browser render a web page, step by step?
- What is the difference between synchronous and asynchronous scripts?
Responsive Design
- What is the difference between adaptive and responsive design?
- How do media queries work in CSS?
- What is the purpose of the viewport meta tag?
- Explain how to create a mobile-first design.
- How would you implement a responsive image?
Web Accessibility
- What is web accessibility, and why is it important?
- How would you ensure a website is accessible to users with disabilities?
- Explain the purpose of ARIA roles.
- How do you test the accessibility of a web page?
Tools and Debugging
- What are some tools you use for debugging front-end code?
- How do you identify and fix layout issues in a webpage?
- What is the difference between a CSS preprocessor like SASS and standard
CSS?
- Explain the role of bundlers like Webpack or Parcel.
- How do you manage browser compatibility issues?
General WordPress Questions
- What is WordPress, and why is it a popular CMS?
- Explain the difference between WordPress.com and WordPress.org.
- What are WordPress themes, and how do they work?
- What is a child theme in WordPress, and why would you use it?
- How do you create a custom post type in WordPress?
Theme Development
- What is the purpose of the functions.php file in a WordPress theme?
- How would you enqueue scripts and styles in WordPress?
- What is the WordPress template hierarchy, and how does it work?
- How do you create a custom template file in WordPress?
- What are the differences between get_template_part() and include()?
Plugin Development
- What is the purpose of WordPress plugins?
- How do you create a basic WordPress plugin?
- What is a WordPress hook? Explain the difference between actions and
filters.
- How do you add a custom shortcode to WordPress?
- How can you secure a WordPress plugin?
WordPress Front-End Development
- How do you use the WordPress Customizer API for front-end customizations?
- What are widgets in WordPress, and how are they added to a theme?
- How do you make a WordPress website responsive?
- How do you integrate JavaScript and jQuery in a WordPress theme?
- What is the difference between the_content() and get_the_content()?
Performance and Optimization
- How do you optimize the performance of a WordPress site?
- What is the purpose of caching in WordPress? Mention tools or plugins you’ve
used.
- How do you optimize images in WordPress?
- How do you debug a slow WordPress website?
- What are some strategies to improve the Core Web Vitals of a WordPress site?
Security
- How do you secure a WordPress website?
- What are some common vulnerabilities in WordPress and how do you prevent
them?
- How would you limit login attempts in WordPress?
- How do you ensure secure file uploads in WordPress?
- What steps would you take if a WordPress site is hacked?
WooCommerce
- What is WooCommerce, and how does it integrate with WordPress?
- How do you customize WooCommerce templates?
- How do you add a custom payment gateway in WooCommerce?
- How do you optimize a WooCommerce store for performance?
- How do you implement custom shipping rules in WooCommerce?
Soft Skills and Problem-Solving (WordPress-Specific)
- Can you describe a complex WordPress project you worked on and how you
overcame challenges?
- How do you handle plugin conflicts in WordPress?
- How do you keep a WordPress site updated without breaking functionality?
- How would you train a non-technical client to use their WordPress site?
- How do you troubleshoot a "White Screen of Death" in WordPress?
Soft Skills and Problem-Solving
- Can you describe a challenging front-end project you worked on and how you
resolved it?
- How do you stay updated with the latest trends in front-end development?
- How would you handle a situation where a designer's layout is not feasible
to implement as specified?