Jquerysubmit () failed to submit form error: f [s] isnotafunction

When jquerysubmit () fails to submit a form, the following error occurs: f [s] isnotafunction, jssubmit () cannot submit a form, and the following error occurs: document. getElementByIdx_x (...). submitisnotafunction errors are helpless. The syntax has no errors. Why... sy jquery submit () failed to submit form error: f [s] is not a function, js submit () failed to submit form error: document. getElementByIdx_x (...). the two submit is not a function errors are helpless. The syntax has no errors. How can I report errors? I have never met anyone before. This time I was modifying others' code. I looked back at the code. I relied on the name = "submit" with the previous button ", if you delete it, you can submit the form normally. Why? It should be a type = "submit" Input that affects form submission! I may think this is the true submit button to the system name = "submit", but it won't be submitted again !? Although you still don't know how it works, you should pay attention to this bug ..