Web DeveloperInterview Questions & Answers
Prepare for your placement drives and technical screenings with these core questions and answers tailored for junior Web Developer candidates.
Q1:What is semantic HTML and why should we use it?
Answer: Semantic HTML uses tags that clearly describe their meaning to both the browser and the developer (e.g., `<article>`, `<header>`, `<footer>`, `<main>`). Using semantic tags improves SEO rankings, ensures screen readers can parse the page for accessibility, and makes code easier to read and maintain.
Q2:Explain the CSS Box Model.
Answer: The CSS Box Model is the foundational layout engine where every HTML element is treated as a rectangular box. It consists of four nested areas: the Content (text/images), Padding (clear space around content), Border (line surrounding padding), and Margin (clear space outside the border).
Q3:What is event delegation in JavaScript?
Answer: Event delegation is a design pattern where you attach a single event listener to a parent element instead of adding multiple listeners to individual child nodes. The parent listener catches events from child nodes as they bubble up, which saves system memory and handles dynamically added children automatically.
How to Answer Behavioral Interview Questions
When answering situational questions (like “tell me about a time you resolved a conflict”), always use the STAR method:
- Situation: Set the context and describe the background.
- Task: Explain the core challenge or goal you had to address.
- Action: Detail the specific steps you took to resolve it.
- Result: Highlight the positive outcome and what you learned.
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