Use cached version of the el jQuery object
Fix searchPhotos route handler not handling case where a reference to a page number is not passed. In this case, the console.log statement would print the page number as being 'undefined'. The fix also helps to clarify that when the optional page reference is not supplied, the 'page' parameter of the handling function will have 'undefined' as its value.
…red instead of multiple add/remove events
..to Additional Tips section