Question

我有一个下拉/组合框，这是它的制作方式

 @Html.DropDownList("combobox", Model.Sizes, "--select--")

它使用了一个jquery ui小部件，

   <script>
    (function ($) {
        $.widget("custom.combobox", {
            _create: function () {
                this.wrapper = $("<span>")
                  .addClass("custom-combobox")
                  .insertAfter(this.element);

                this.element.hide();
                this._createAutocomplete();
                this._createShowAllButton();
            },

            _createAutocomplete: function () {
                var selected = this.element.children(":selected"),
                  value = selected.val() ? selected.text() : "";

                this.input = $("<input>")
                  .appendTo(this.wrapper)
                  .val(value)
                  .attr("title", "")
                  .addClass("custom-combobox-input ui-widget ui-widget-content ui-state-default ui-corner-left")
                  .autocomplete({
                      delay: 0,
                      minLength: 0,
                      source: $.proxy(this, "_source"),
//ADDED HERE
                      select: function(event, ui) { 
                    sizeID=ui.item.id; 
                }
                  })
                  .tooltip({
                      tooltipClass: "ui-state-highlight"
                  });

                this._on(this.input, {
                    autocompleteselect: function (event, ui) {
                        ui.item.option.selected = true;
                        this._trigger("select", event, {
                            item: ui.item.option
                        });
                    },

                    autocompletechange: "_removeIfInvalid"
                });
            },

            _createShowAllButton: function () {
                var input = this.input,
                  wasOpen = false;

                $("<a>")
                  .attr("tabIndex", -1)
                  .attr("title", "Show All Items")
                  .tooltip()
                  .appendTo(this.wrapper)
                  .button({
                      icons: {
                          primary: "ui-icon-triangle-1-s"
                      },
                      text: false
                  })
                  .removeClass("ui-corner-all")
                  .addClass("custom-combobox-toggle ui-corner-right")
                  .mousedown(function () {
                      wasOpen = input.autocomplete("widget").is(":visible");
                  })
                  .click(function () {
                      input.focus();

                      // Close if already visible
                      if (wasOpen) {
                          return;
                      }

                      // Pass empty string as value to search for, displaying all results
                      input.autocomplete("search", "");
                  });
            },

            _source: function (request, response) {
                var matcher = new RegExp($.ui.autocomplete.escapeRegex(request.term), "i");
                response(this.element.children("option").map(function () {
                    var text = $(this).text();
                    if (this.value && (!request.term || matcher.test(text)))
                        return {
                            label: text,
                            value: text,
                            option: this
                        };
                }));
            },

            _removeIfInvalid: function (event, ui) {

                // Selected an item, nothing to do
                if (ui.item) {
                    return;
                }

                // Search for a match (case-insensitive)
                var value = this.input.val(),
                  valueLowerCase = value.toLowerCase(),
                  valid = false;
                this.element.children("option").each(function () {
                    if ($(this).text().toLowerCase() === valueLowerCase) {
                        this.selected = valid = true;
                        return false;
                    }
                });

                // Found a match, nothing to do
                if (valid) {
                    return;
                }

                // Remove invalid value
                this.input
                  .val("")
                  .attr("title", value + " didn't match any item")
                  .tooltip("open");
                this.element.val("");
                this._delay(function () {
                    this.input.tooltip("close").attr("title", "");
                }, 2500);
                this.input.autocomplete("instance").term = "";
            },

            _destroy: function () {
                this.wrapper.remove();
                this.element.show();
            }
        });
    })(jQuery);

    $(function () {
        $("#combobox").combobox();
        $("#toggle").click(function () {
            $("#combobox").toggle();
        });
    });
</script>

然后我尝试使用Json likeeee传递此下拉列表的值

<script type="text/javascript">
        $(function () {
            $("[name='combobox']").change(function () {

                $.getJSON('@Url.Action("GetSize")', { sizeID: $("[name='combobox']").val() }, function (Size) {
                    // Fill the fields according to the Jsondata we requested

                    $("#KID").val(Size["KammID"]);

这使用我的控制器中的get size动作，

    public JsonResult GetSize(int sizeID)
    {
        var Size = db.AllSizes.Find(sizeID);
        return Json(Size, JsonRequestBehavior.AllowGet);
    }

Andddddd这与我的正常下拉菜单完美配合，但是一旦我将其更改为组合框，它似乎没有获得sizeID，

帮助BENJI

Answer 1

您可以添加如下所述的选择功能： Get value in jquery autocomplete

所以当选择一个选项时，你将值存储在一个变量中。

例如：

var sizeID;
.autocomplete({
                          delay: 0,
                          minLength: 0,
                          source: $.proxy(this, "_source"),
                          select: function(event, ui) { 
                               sizeID=ui.item.id; 
                               }
                      })

使用Json自动填充userform传递Dropdown组合框值

1 个答案: