Question

I’m using JSONP to retrieve values for a login form, then having the form self-submit. However, the form is submitting before the fields are populated, resulting in validation flags.

The function does return the correct value, but the globally scoped variable unscrambleText is returning undefined. I know that async:false is necessary to return synchronous calss, but that seems to be ignored in this case. I got this to work with a basic AJAX call on another page. What am I missing with this specific example?

$(document).ready(function () {
            if ((getQueryVariable("a") != 0) && (getQueryVariable("b") != 0)) {
                $("#UsernameTextBox").val(decryptEm(getQueryVariable("a")));
                $("#PasswordTextBox").val(decryptEm(getQueryVariable("b"));
                //This action is being triggered before the above two fields are populated
                $("#ctl00_ContentPlaceHolder1_SubmitButton").trigger("click");
            }

            function getQueryVariable(variable) {
                var query = window.location.search.substring(1);
                var vars = query.split("&");
                for (var i = 0; i < vars.length; i++) {
                    var pair = vars[i].split("=");
                    if (pair[0] == variable) {
                        return unescape(pair[1]);
                    }
                }
                return 0;
            }

            function decryptEm(thevar) {
                var unscrambleText;

                $.ajax({
                    url: 'http://foo.bar/decrypt.php',
                    async: false,
                    dataType: 'jsonp',
                    data: 'text=' + thevar,
                    success: function (data) {
                        unscrambleText = data["theval"].replace(/^\s+|\s+$/g, "");
                    }
                });
                return unscrambleText;
            }

        });

Answer 1

you could try using setInterval before triggering the click, maybe a 2 second delay is enough.

alternately changing your code to do decryptEms, which would do all fields and return both, and only then you do your trigger form submit