What is the purpose of the declaration?

Question

What is the purpose of the <!DOCTYPE html> declaration?

Accepted Answer

Short answer: The declaration tells the browser which version of HTML the page uses. In modern websites, it triggers HTML5 standards mode, ensuring consistent rendering across browsers. Example: ... Key Takeaway: Always include at the top of every HTML file. Real-world example (ShopNest) ShopNest’s browser cart uses modern JavaScript: fetch APIs with async/await, modules, and clear error handling. Say this in the interview Define — one clear sentence (the short answer above). Example — relate it to a project like ShopNest or your real work. Trade-off — when you would not use it.