jQuery.isFunction()
Determines if its argument is callable as a function.
Category: Deprecated 3.3
jQuery.isNumeric()
Determines whether its argument represents a JavaScript number.
jQuery.isWindow()
Determine whether the argument is a window.
jQuery.now()
Return a number representing the current time.
jQuery.proxy()
Takes a function and returns a new one that will always have a particular context.
jQuery.type()
Determine the internal JavaScript [[Class]] of an object.