Which of the following is the correct way to assign events to HTML elements using JavaScript?

Which benefit can AJAX provide to Web Applications?

Which javascript functions can be used to convert JSON string into object?

Which is true for asynchronous requests and response?

Which jQuery AJAX function is used to set default values for future AJAX requests?

Which numbers, in callback function of request object, can be tested against request.readyState to make sure that server has finished processing request?

How do you detect errors in Ajax REQUESTS?

You've created an XMLHttpRequest object, xhr, and properly called open as well as send on the object. When you check xhr.status and it's 0 and your responseText is null. What's the most likely explanation of what happened?

What value of the XMLHttpRequest object's readystate attribute indicates that the response data (i.e. not the headers) is currently being sent back from the server?

What HTTP response header is expected in reply to a CORS request?

You're issuing a request to "/resource" using XMLHttpRequest (xhr) where the server returns a 301 or 302 status code, what happens?