Which of the following jQuery method remove all or the specified class(es) from the set of matched elements?

Which jQuery method is used to perform an asynchronous HTTP request?

Which jQuery method gets the children of each element in the set of matched elements?

Which jQuery method adds the specified class if it is not present or remove the specified class if it is present?

Which is the correct method to remove a property for the set of matched element?

What is jQuery ?

Which selector is the fastest?

To dynamically set the src attribute of all img elements use:

Which is a state selector?

live() method has been removed from version 1.9

Is this a valid statement in jQuery? $('#foo').hide().show().css('color', 'red').fadeOut();