| 1 | Why is manually working with time zones using the Date object error-prone? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Advanced |
| 2 | How do you get a relative time string like '3 days ago' using built-in APIs? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Advanced |
| 3 | How do you create a Date object representing the current moment? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Beginner |
| 4 | Why is Date.parse() considered unreliable for parsing date strings? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Beginner |
| 5 | How do you format a date for a specific locale without a library? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Intermediate |
| 6 | How do you calculate the difference between two dates in days? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Intermediate |
| 7 | How do you format numbers and currency for a locale using Intl.NumberFormat? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Intermediate |
| 8 | How do you sort an array of strings correctly for a given language using Intl.Collator? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Advanced |
| 9 | What is the Temporal API and what problem does it solve? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Advanced |
| 10 | Why does new Date(2026, 7, 8) represent August 8th, not July 8th? JavaScript › Date, Time & Internationalization (Intl API) | JavaScript | Date, Time & Internationalization (Intl API) | Advanced |