JS组件系列——Bootstrap Select2组件使用小结

 　　<script src="~/Scripts/jquery-1.10.2.js"></script>

    <script src="~/Content/bootstrap/js/bootstrap.js"></script>
    <link href="~/Content/bootstrap/css/bootstrap.css" rel="stylesheet" />

    <script src="~/Content/select2-master/dist/js/select2.js"></script>
    <link href="~/Content/select2-master/dist/css/select2.css" rel="stylesheet" />

　　<select id="sel_menu2" multiple="multiple" class="form-control">
         <optgroup label="系统设置">
              <option value="1">用户管理</option>
              <option value="2">角色管理</option>
              <option value="3">部门管理</option>
              <option value="4">菜单管理</option>
         </optgroup>
         <optgroup label="订单管理">
              <option value="5">订单查询</option>
              <option value="6">订单导入</option>
              <option value="7">订单删除</option>
              <option value="8">订单撤销</option>
         </optgroup>
         <optgroup label="基础数据">
              <option value="9">基础数据维护</option>
          </optgroup>
     </select>

    //多选
    $("#sel_menu2").select2({
        tags: true,
        maximumSelectionLength: 3  //最多能够选择的个数
    });

<select id="sel_menu" class="js-example-templating js-states form-control">
             <optgroup label="系统设置">
                 <option value="1">用户管理</option>
                 <option value="2">角色管理</option>
                 <option value="3">部门管理</option>
                 <option value="4">菜单管理</option>
             </optgroup>
             <optgroup label="订单管理">
                 <option value="5">订单查询</option>
                 <option value="6">订单导入</option>
                 <option value="7">订单删除</option>
                 <option value="8">订单撤销</option>
             </optgroup>
             <optgroup label="基础数据">
                 <option value="9">基础数据维护</option>
             </optgroup>
         </select>

$(function () {
    //带图片
    $("#sel_menu").select2({
        templateResult: formatState,
        templateSelection: formatState
    });
});

function formatState(state) {
    if (!state.id) { return state.text; }
    var $state = $(
      '<span><img src="/content/images/' + state.element.value.toLowerCase() + '.ico" class="img-flag" /> ' + state.text + '</span>'
    );
    return $state;
};

 <select id="sel_menu3" class="js-data-example-ajax form-control">
      <option value="3620194" selected="selected">请选择</option>
 </select>

$(function () {
    //远程筛选
    $("#sel_menu3").select2({
        ajax: {
            url: "/Home/GetProvinces",
            dataType: 'json',
            delay: 250,
            data: function (params) {
                return {
                    q: params.term, // search term
                    page: params.page
                };
            },
            processResults: function (data, params) {
                params.page = params.page || 1;

                return {
                    results: data.items,
                    pagination: {
                        more: (params.page * 10) < data.total_count
                    }
                };
            },
            cache: true
        },
        escapeMarkup: function (markup) { return markup; }, // let our custom formatter work
        minimumInputLength: 1,
        templateResult: formatRepoProvince, // omitted for brevity, see the source of this page
        templateSelection: formatRepoProvince // omitted for brevity, see the source of this page
    });
});

function formatRepoProvince(repo) {
    if (repo.loading) return repo.text;
    var markup = "<div>"+repo.name+"</div>";
    return markup;
}

public List<string> lstProvince = new List<string>() {"北京市","天津市","重庆市","上海市","河北省","山西省","辽宁省","吉林省","黑龙江省","江苏省","浙江省","安徽省","福建省","江西省","山东省","河南省","湖北省","湖南省","广东省","海南省","四川省","贵州省","云南省","陕西省","甘肃省","青海省","台湾省","内蒙古自治区","广西壮族自治区","西藏自治区","宁夏回族自治区","新疆维吾尔自治区","香港特别行政区","澳门特别行政区" };
        public JsonResult GetProvinces(string q, string page)
         {
            var lstRes = new List<Province>();
            for (var i = 0; i < 30; i++)
            {
                var oProvince = new Province();
                oProvince.id = i;
                oProvince.name = lstProvince[i];
                lstRes.Add(oProvince);
            }
            if (!string.IsNullOrEmpty(q.Trim()))
            {
                lstRes = lstRes.Where(x => x.name.Contains(q)).ToList();
            }
            var lstCurPageRes = string.IsNullOrEmpty(page) ? lstRes.Take(10) : lstRes.Skip(Convert.ToInt32(page) * 10 - 10).Take(10);
            return Json(new { items = lstCurPageRes, total_count = lstRes.Count }, JsonRequestBehavior.AllowGet);
        }

 var oMenuIcon = $("#txt_menuicon_web").select2({
            placeholder: "请选择菜单图标",
            templateResult: oInit.formatState,
            templateSelection: oInit.formatState
        });

oMenuIcon.val();

 var oMenuIcon = $("#txt_menuicon_web").select2({
            placeholder: "请选择菜单图标",
            templateResult: oInit.formatState,
            templateSelection: oInit.formatState
        });

 oMenuIcon.val("CA").trigger("change");