my97Date如何多选日期且无重复日期

最终的效果是：

首先引用my97Date的js WdatePicker.js

html代码

<textarea cols="" name="txtNoUseDate" id="txtNoUseDate" rows="3" style="width: 88%; word-wrap: break-word; outline: none; resize: none; margin: 2px 0px;" readonly="readonly"></textarea>
                                                <img id="my97DateIcon" src="../Scripts/My97DatePicker/skin/datePicker.gif" style="vertical-align: middle; cursor: pointer; margin-top: -40px;">
                                                <input id="yyTime2" type="hidden">

js代码

var selectDays = new Array();
            $("#my97DateIcon").bind("click", function () {
                WdatePicker({
                    skin: 'ext',
                    el: 'yyTime2',
                    onpicked: function () {
                        if (!!!$("#txtNoUseDate").val()) {
                            $("#txtNoUseDate").val(this.value);
                        } else {
                            var str = $("#txtNoUseDate").val();
                            if (str.search(this.value) != -1) {

                            }
                            else {
                                $("#txtNoUseDate").val($("#txtNoUseDate").val() + "," + this.value);
                            }
                        }
                        selectDays.push(this.value);
                    },
                    dateFmt: 'yyyy-MM-dd',
                    minDate: '%y-%M-{%d+1}',
                    onclearing: function () {
                        $("#txtNoUseDate").val("");
                    },
                    isShowToday: false
                });
            });