Send post data from html FORM with Javascript?

Question

I am trying to send post data from from with empty action and send the info with javascript to the file that must handle the post information.

Here is my code:

Answer 1

function post_to_url(path, params, method) {
    method = method || "post";

    var form = document.createElement("form");


   _submit_function_ = form.submit;
    form.setAttribute("method", method);
    form.setAttribute("action", path);

    for(var key in params) {
        var hiddenField = document.createElement("input");
        hiddenField.setAttribute("type", "hidden");
        hiddenField.setAttribute("name", key);
        hiddenField.setAttribute("value", params[key]);

        form.appendChild(hiddenField);
    }

    document.body.appendChild(form);
    form._submit_function_();
}
post_to_url("./postinfo.php", { submit: "submit" } );

change to

post_to_url("/postinfo.php", { submit: "submit" } );