Passing the values of a form to a PHP script using JavaScript/jQuery

Solution:

I think there is lots of examples of how to do this around. You certainly do not need jquery (much less 2 instances of it). Maybe something like this?

document.querySelector("#submit").addEventListener("submit", function(e){
e.preventDefault();    //stop form from submitting
var form = this;
fetch('create_file.php', {method:'post', body: new FormData(form)})//send the data using fetch
.then(response => response.json()) //get json response
.then(data => console.log(data)); //log the response data
});

Answer

Solution:

You need Jquery and Ajax

and the syntax is so:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script><script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>

<script>
$.ajax({
         url:"https://yourwebsite.de/file.php",
         type:"POST",
         data: { 
mode: "add", firma: firma, email:email, adresse1: adresse1,adresse2:adresse2 },
         success:function(e){
//answer from php file

         }});
</script>

Source