jquery.post.js

    // See https://stackoverflow.com/questions/133925/javascript-post-request-like-a-form-submit, jQuery version with arrays and objects support
    function post(path, parameters) {
        var form = $('<form></form>');

        form.attr("method", "post");
        form.attr("action", path);

        $.each(parameters, function(key, value) {
            if ( typeof value == 'object' || typeof value == 'array' ){
                $.each(value, function(subkey, subvalue) {
                    var field = $('<input />');
                    field.attr("type", "hidden");
                    field.attr("name", key+'[]');
                    field.attr("value", subvalue);
                    form.append(field);
                });
            } else {
                var field = $('<input />');
                field.attr("type", "hidden");
                field.attr("name", key);
                field.attr("value", value);
                form.append(field);
            }
        });
        $(document.body).append(form);
        form.submit();
    }

Comment by @StephanWeinhold on Jan 29, 2016
I'd use var post = function as every function in JS is a variable.

function post already creates a variable & looks better