Category: Properties of jQuery Object Instances 
Each jQuery object created with the jQuery() function contains a number of properties alongside its methods. These properties allow us to inspect various attributes of the object.    .context   The DOM node context originally passed to jQuery(); if none was passed then context will likely be the document.     .jquery   A string containing the jQuery version number.     .length   The number of elements in the jQuery object.     .selector   A selector representing selector passed to jQuery(), if any, when creating the original set.   

    
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