How do I make a put with ajax?

Hello everyone,

I try to make a put with the ajax plugin but it doesn't work

That's my work

I know how to do that with js and it's work fine, but I want to do that with just no JS

Thank you in advance to those who will reply.

Are you testing in preview? Press F12 and check for error messages in console.

Hello thank you for your answer.

Yes, I've already done it, and I'm getting a 400 error.

Well, it's your local server that responds with error 400.