Jquery image upload with preview and delete. on() method with a specific selector that has multiple events associated with it. $ is pretty commonly used as a selector function in JS. 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. jQuery can be ran in compatibility mode if another library is using the $ already. . jQuery select by attribute using AND and OR operators Asked 13 years, 4 months ago Modified 10 years, 7 months ago Viewed 216k times In jQuery's case, $ is just an alias for jQuery, so all functionality is available without using $. From what I've seen, many people using jQuery (which is what your example code looks like to me) tend to prefix variables that contain a jQuery object with a $ so that they are easily identified and not mixed up with, say, integers. I was previously using the . jQuery = window. $ = jQuery;). fhge 2s a2ais a8e 92wn llwvn xbcoela 8bi7s gnmkbbf p8yrlqu