jquery字符串拼接

Question

怎么拼接才能没有最后的&

         <div class="row urlpanel  span12 hide">
                        <div class="row goodsGrade">
                              <div class="control-group span12 offset1">
                                    <label class="control-label">品类：</label>
                                    <div class="controls">
                                          <select name="goodsGradeId" class="selectGoodsGrade">
                                                      <option value="0">全部</option>
                                                      <option value="1">衣服</option>
                                                      <option value="2">裤子</option>
                                                      <option value="3">鞋子</option>
                                                 </select>
                                          <span>&nbsp;(注：等同于一级分类)</span>
                                    </div>
                              </div>
                        </div>
                        <div class="row goodsSeries">
                        </div>
                        <div class="row">
                              <div class="control-group span12 offset1">
                                    <label class="control-label">适穿人群：</label>
                                    <div class="controls">
                                          <select name="goodsType">
                                        <option value="">全部</option>
                                        <option value="1">成人</option>
                                        <option value="2">儿童</option>
                                    </select>
                                    </div>
                              </div>
                        </div>
                        <div class="row">
                              <div class="control-group span12 offset1">
                                    <label class="control-label">性别：</label>
                                    <div class="controls">
                                          <select name="goodsSex">
                                        <option value="">全部</option>
                                        <option value="1">男款</option>
                                        <option value="2">女款</option>
                                        <option value="3">中性</option>
                                    </select>
                                    </div>
                              </div>
                        </div>
                        <div class="row">
                              <div class="control-group span12 offset1">
                                    <label class="control-label">上市年份：</label>
                                    <div class="controls">
                                          <select name="goodsYear">
                                                <option value="">全部</option>
                                                <option value="2017">2017</option>
                                                <option value="2016">2016</option>
                                                <option value="2015">2015</option>
                                          </select>
                                    </div>
                              </div>
                        </div>
                        <div class="row">
                              <div class="control-group span12 offset1">
                                    <label class="control-label">季节：</label>
                                    <div class="controls">
                                          <select name="goodsSeason">
                                        <option value="">全部</option>
                                        <option value="1">Q1(春季)</option>
                                        <option value="2">Q2(夏季)</option>
                                        <option value="3">Q3(秋季)</option>
                                        <option value="4">Q4(冬季)</option>
                                    </select>
                                    </div>
                              </div>
                        </div>
                        <div class="row center">
                              <button type="button" class="url-ok-btn jx-btn btn-default">确定</button>
                              <button type="button" class="url-cancel-btn  jx-btn">取消</button>
                        </div>
                  </div>

Answer 1

serializestr.substr(0,serializestr.length-2);

Answer 2

字符串截取啊

Answer 3

str.substring(0,str.length-2)

Answer 4

var serializestr = '?';
...
serialize += panel.find('select').map(function () {
  return this.getAttribute('name') + '=' + this.value;
}).join('&');
console.log(serializestr);

Answer 5

serializeArr = []

each:
  serializeArr.push(this.value)

log('?' + serializeArr.join('&'))