the introduction path is as follows: < script src= "js/jquery-2.1.4.min.js" > < / script >
IE hint: if SCRIPT5009:"$"is not defined, changes jq to an online address, there will be no problem with the introduction < script src= " http://code.jquery.com/jquery.;. Pictures introduced by < / script >,
and 
IE browser is lower, this plug-in is not compatible with any version. Find a solution from the Internet
https://www.cnblogs.com/holdo.
this problem has been solved, because the browser will parse the relative path of the picture introduced by img, and my directory uses Chinese, resulting in garbled code after path parsing, just change the directory name to English.
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