js问题 Cannot read property 'messages' of undefined
Cannot read property 'messages' of undefined 1.在这个js引入之前尝试输出$.validator(判断$.validator有没被定义) A:应该会输出没有的（说明页面上没引入）；在idea里点这个messages是能跳转的，但并不能说明在html上引入了 2.在HTML上马上引入js(必须是在这个js之前)，尝试输出$.validator.messa
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