Jquery uploadify image upload plug-in cannot be uploaded solution_jquery

First of all, make sure the version of the plug-in you are using. Different versions will cause different problems. I am using version 3.2.1. The function I have completed a few days ago has an error when running today. It took me a long time to work on it. I know that's wrong, so I'd better search carefully. It turns out that it's a problem with the introduction of the jquery library. Maybe the package version I imported is low. I changed it to a js library and it was fixed immediately. It's really a scam. Anyone who needs this demo can email me. !