ajax发送请求时出现错误ncaught ReferenceError: $ is not defined at login (login.html?_ijt=gtmvnq78gcmhq7og

在header中加入

 
    
    Document
        
    login test
    
    
    
    
    
    
    

ajax发送请求时出现错误ncaught ReferenceError: $ is not defined at login (login.html?_ijt=gtmvnq78gcmhq7og_第1张图片

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