本文實例為大家分享了bootstrap實現下拉框搜索展示的具體代碼，供大家參考，具體內容如下

1.第一個下拉框代碼

<div class="btn-group col-sm-3 col-xs-6 util-btn-margin-bottom-5 quick-search">        <!--快速查詢-->       <div class="input-group">        <span class="input-group-addon"><i class="fa fa-search"></i></span>        <select data-filter-type="2" name="copyfrom" class="form-control select2" data-validate="notempty" style="visibility: hidden;" data-field="name" data-placeholder="搜索數據資源">         <option value="">請選擇數據資源</option>         <optgroup label="UNESCO二類中心">          <#list data.copyfromList as entity>          <#if (entity.type?? && entity.type == '1')>          <option value="${entity.alias!}" <#if (param.copyfrom?? && param.copyfrom == entity.alias)>selected</#if>>${entity.alias!}</option>          </#if>          </#list>         </optgroup>         <optgroup label="科技動態與進展">          <#list data.copyfromList as entity>          <#if (entity.type?? && entity.type == '7')>          <option value="${entity.alias!}" <#if (param.copyfrom?? && param.copyfrom == entity.alias)>selected</#if>>${entity.alias!}</option>          </#if>          </#list>         </optgroup>         <optgroup label="其他">          <#list data.copyfromList as entity>          <#if (entity.type?? && entity.type == '8')>          <option value="${entity.alias!}" <#if (param.copyfrom?? && param.copyfrom == entity.alias)>selected</#if>>${entity.alias!}</option>          </#if>          </#list>         </optgroup>        </select>       </div>      </div>

2.第二個下拉框代碼

<div class="btn-group col-sm-3 col-xs-6 util-btn-margin-bottom-5 quick-search">        <!--快速查詢-->       <div class="input-group">        <span class="input-group-addon"><i class="fa fa-search"></i></span>        <select data-filter-type="2" name="cid" class="form-control select2" data-validate="notempty" style="visibility: hidden;" data-field="name" data-placeholder="搜索欄目名稱">         <option value=""></option>         <#list data.categories as entity>         <option value="${entity.id}" <#if (param.cid?? && param.cid == entity.id)>selected</#if>>${entity.id} - ${entity.name}</option>         </#list>        </select>       </div>      </div>

3.后臺js代碼（url 參數整理）

bindEvents:function(){　　　　var self = this, dom = self.element;　　　　$('select[name="copyfrom"]', dom).change(function(event){　　　　self.params.copyfrom = $(this).val();　　　　var url = self.formatParams(self.params);　　　　window.location.href = "cekasp_article.htm" + url;　　});　　　　$('select[name="cid"]', dom).change(function(event){　　　　self.params.cid = $(this).val();　　　　var url = self.formatParams(self.params);　　　　window.location.href = "cekasp_article.htm" + url;　　}); }　　formatParams:function(params){　　　　var self = this;　　　　var url = "";　　　　for(var param in params){　　　　if(params[param]){　　　　　　url += param + "=" + params[param] + "&";　　　　}　　}　　　　if(url.length > 0){　　　　　　url = "?" + url.substring(0,url.length-1);　　}　　　　return url;　　}