jQuery Autocomplete using extraParams to pass additional GET variables

Question

I am referring specifically to the jQuery Autocomplete v1.1 plugin by Jörn Zaefferer [source: http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/] as there seems to

Answer 1

Using the autocomplete in JQuery 1.7.something...

Using an aspx data grid: I needed autocomplete to fire for any record choosen but with different seed data based on the value entered. I also needed two other fields that are being displayed in the record on the data grid to get my data for the autocomplete. The fields I need to reference all have their own class name.

    $(".AutoSearch").autocomplete({
            DateTime: "",
            Maker: "",
            search: function (event, ui) {
                DateTime = $(this).parent().parent().parent().find(".DateTime").text();
                Maker = $(this).parent().parent().parent().find(".Maker").text();
            },
            source: function (request, response) {
                $.ajax({
                    type: "POST",
                    dataType: "json",
                    url: "AutoList.aspx/GetListOfAutos",
                    data: "{ " +
                        "'DateTime': '" + DateTime + "', " +
                        "'Maker': '" + Maker + "', " +
                        "'SearchSeed': '" + request.term + "', " +
                        "'NumberToRetrieve': '" + 100 + "'" +
                    " }",
                    contentType: "application/json; charset=utf-8",
                    success: function (data) {
                        response($.map(data.d, function (item) {
                            return {
                                label: item.Description,
                                value: item.Number
                            }
                        }));
                    },
            error: function (XMLHttpRequest, textStatus, errorThrown) {
                        alert("There was an error retrieving the Data.");
                    }
                });
            },
            change: function (event, ui) {
                $(this).parent().parent().parent().parent().parent().parent().css("background-color", "#EEC900");
                $(this).parent().parent().parent().parent().parent().parent().find(".chkReadyExport").find("input:checkbox").prop("checked", false);
            },
            select: function (event, ui) {
                this.value = ui.item.value;
                return false;
            },
            minlength: 6,
            open: function () {
                $(this).removeClass("ui-corner-all").addClass("ui-corner-top");
            },
            close: function () {
                $(this).removeClass("ui-corner-top").addClass("ui-corner-all");
            }
        });
    }

I added two properties; DateTime and Maker and then using search: which is fired before the autocomplete fires source: I was able to get the data I needed from the row that I was on. This provided me a nice way to keep all my searching and extra data items all in one place.

The .parent().parent() and so on is because I have multi-line tables to display my data in the gridview and I need to traverse up the tree and then find the text box or label I'm looking for and change the background color of the row with the changed data. I am not proficient at finding items with jQuery yet thus the parent.parent... thing.