To check if DOM element 'currentDiv' don't have any child nodes, we can use which one of the following conditions?

Correct way to disable register button while request is processing?

Which is true about asynchronous request?

Which is true to convert AJAX JSON response into object?

Which parameter to request.open() are correct?

Why would a public api return a non valid json like this? for(;;); {'key1':val1,'key2': 'val2'}

What are the advantages of using JavaScript libraries (like jQuery) to implement Ajax?

Which browser features and/or technologies must be enabled, at a minimum, for AJAX techniques to function properly?

In standard JavaScript, what makes asynchronous execution of Ajax calls possible?

What does the acronym "blob" stand for when referring to data types?

Which HTML5 feature can improve the experience of a user using the "back" and "forward" buttons when using AJAX techniques?