Description: A selector representing selector passed to jQuery(), if any, when creating the original set.
version added: 1.3selector
.selector property was deprecated in jQuery 1.7 and is only maintained to the extent needed for supporting
.live() in the jQuery Migrate plugin. It may be removed without notice in a future version. The property was never a reliable indicator of the selector that could be used to obtain the set of elements currently contained in the jQuery set where it was a property, since subsequent traversal methods may have changed the set. Plugins that need to use a selector should have the caller pass in the selector as part of the plugin's arguments during initialization.