Determine if the callbacks list has been locked.
Wrap an HTML structure around all elements in the set of matched elements.
Check to see if an object is empty (contains no enumerable properties).
Wrap an HTML structure around the content of each element in the set of matched elements.
A collection of properties that represent the presence of different browser features or bugs. Intended for jQuery’s internal use; specific properties may be removed when they are no longer needed internally to improve page startup performance. For your own project’s feature-detection needs, we strongly recommend the use of an external library such as Modernizr instead of dependency on properties in jQuery.support.