问题
I'm getting an error that says "Uncaught typeError: cannot call method 'hover' of null" after
$('#nav li a').hover(function(){ in my javascript.
site code: http://pastebin.com/GjZBEu3s jsfiddle: http://jsfiddle.net/jenga/5rfCC/2/
回答1:
You scripting should be in the body of the document, right before the closing </body> tag. If it's loaded in the <head>, the elements it addresses in the document may not be loaded yet. See this jsfiddle (notice 'no wrap (body)' in the 'Choose framework' dialog).
By the way, a similar effect could be achieved using css only. Use this jsfiddle in a Chrome/webkit browser.
来源：https://stackoverflow.com/questions/12293505/my-script-works-in-jsfiddle-but-not-site-cannot-call-method-hover-of-null