This repository demonstrates a common closure issue in JavaScript when using setTimeout within a loop. The expected behavior is to log the numbers 0-9 with a one-second delay between each. However, due to the way closures work, the loop completes before the setTimeout callbacks execute, resulting in all callbacks logging the final value of 'i' (which is 10).
The problem lies in how JavaScript handles closures. Each setTimeout callback function creates a closure over the variable i. However, by the time these callbacks finally execute, the loop has already finished, and 'i' has its final value of 10.
The solution involves using an Immediately Invoked Function Expression (IIFE) or let within the loop to create a new scope for each iteration, ensuring each callback captures its own unique value of 'i'.