One frequently asked Ajax interview question: Synchronous vs Asynchronous requests

Focus keyword: Ajax interview question

One of the common questions you may encounter in an Ajax interview is, "Can you explain the difference between synchronous and asynchronous Ajax requests, and when would you use each?"

Synchronous Ajax request: In a synchronous Ajax request, the code execution waits for the request to be completed before moving on to the next task. This can lead to a delay in the overall functionality of the application as it may freeze while waiting for the response.

Asynchronous Ajax request: In an asynchronous Ajax request, the code execution continues without waiting for the request to be completed. This allows for smoother user experience as other tasks can be performed while waiting for the response.

When to use each: Synchronous requests are typically used when the response is critical for the next steps in the application, while asynchronous requests are preferred for non-essential data fetching where the user can continue interacting with the application.