find will get the descendants of each element in the current set of matched elements, filtered by a selector, jQuery object, or element.
Given a jQuery object that represents a set of DOM elements, the find method allows us to search through the descendants of these elements in the DOM tree and construct a new jQuery object from the matching elements.
The find and children methods are similar, except that the latter only travels a single level down the DOM tree.
<!doctype html> <html> <head> <title>find demo</title> <script src='//code.jquery.com/jquery-1.10.2.js'></script> </head> <body> <p><span>Hello</span>, how are you?</p> <p>Me? I'm <span>good</span>.</p> <script> $('p').find('span').css('color', 'red'); </script> </body> </html>