Jquery function return value undefined. Dec 28, 2011 · The $ is an alias for jQuery which (jQuery) is a Javascript library. Jun 26, 2009 · It is shorthand for jQuery (). 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. Which you can use if you want. Dec 13, 2013 · The cash sign is just an alias for the jQuery function. jQuery can be ran in compatibility mode if another library is using the $ already. Just use jQuery. show every where we can use the alias $ ($. html(), . What are the possible reasons for document.
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