If JavaScript waited for each task, your app would freeze. Instead, it continues running other code while waiting. A Promise represents a value that arrives in the future. A Promise has three states: ...

The browser provides extra help. When you use a timer, JavaScript hands that task to the browser. The browser handles the wait. Once the timer ends, the browser tells JavaScript to run the callback.

URL Shortener with Analytics A modern full-stack URL shortening application built using the MERN stack. Create short, shareable links with optional custom aliases, track clicks, and generate QR codes ...