Скачать или смотреть JavaScript || for Default Values 🔄 | Practical Tip Explained |

🎯 Practical JavaScript in action: Using `||` to set default values!

📌 Code Example:
let username = "";
let displayName = username || "Guest";
console.log(displayName); // ➝ "Guest"

🔧 If `username` is empty (falsy), fallback to `"Guest"` is applied.
🧠 One-liner logic used in real-world JS apps like:
Login & Auth UI
ReactJS components
Config-based code

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