通过页面元素获取值、js判空、字符串转为数字及页面设置唯一ID

        <ul class="floorOne">
            #set($groupRespDTOList = '') ##属性组
            #if($!{pagePub})
                #set($groupRespDTOList=$crossItem.cmsItemGdsfloorPubRespDTOList)
            #else
                #set($groupRespDTOList=$crossItem.cmsItemGdsfloorPreRespDTOList)
            #end
            #foreach($cmsItemGds in $groupRespDTOList)
                #if($cmsItemGds.gdsId && $cmsItemGds.gdsId != '')
                    #set($detailUrl="gdsdetail/"+$cmsItemGds.gdsId+"-")
                    <li goodsId="$!{cmsItemGds.gdsId}" promId="">
                        <input style="display: none;" type="text" id="mainTitle$!{cmsItemGds.gdsId}" value="$!{mainTitle}"/>
                        <input style="display: none;" type="text" id="subTitle$!{cmsItemGds.gdsId}" value="$!{subTitle}"/>
                        <input style="display: none;" type="text" id="newButtonWord$!{cmsItemGds.gdsId}" value="$!{buttonWord}"/>
                        <div class="itemBox">
                            <p class="tipImg lt"><img id="left_Tag_image" src="#genImageUrl($!{picUrl1},'')" alt=""></p>
                            <p class="tipImg rt"><img id="right_Tag_image" src="#genImageUrl($!{picUrl2},'')" alt=""></p>
                            <a href="javascript:void(0);" lazy-href="$!{detailUrl}">
                            <img id="gdsImg" name="imgName" class="prodImg" src="#genImageUrl($!{cmsItemGds.gdsUrl},'')" alt="">
                            </a>
                        #*<img src="../images/pro/list-pro04.png" alt="">*#
                            <div class="product">
                                <h3 name="gdsName"></h3>
                                <p class="word"  name="secondName"></p>
                                <p class="price" name="newPrice1" style="text-align:left"></p>
                                <!--<p class="word" style="text-decoration: line-through;text-align:left" name="oldPrice"></p>-->
                            </div>
                        </div>
                    </li>
                #end
            #end
        </ul>

return new Promise(function (resolve) {
                    var $li = $(li);
　　　　　　　　　　　　　//通过页面元素的id、name、class等获取值
                    $li.attr('loaded', '1');
                    var siteId = $('#siteId').val();
                    var goodsId = $li.attr("goodsId");
                    var promId = $li.attr("promId");
                    var $img = $li.find('img[name=imgName]');
                    var $gdsName = $li.find('h3[name=gdsName]');
                    var $secondName= $li.find('p[name=secondName]');
                    var $newPrice = $li.find('span[name=newPrice]');
                    var $newPrice1 = $li.find('p[name=newPrice1]');
                    var $oldPrice = $li.find('p[name=oldPrice]');
                    var $aLink = $li.find('a.link');
                    var $upperLeftMark = $li.find("#upperLeftMark");
                    var $DBword = $li.find("#DBword");

                    // var $aCarbtn = $li.find('a.carBtn');
                    var callBack = function (gdsInfo) {
                        if (gdsInfo && gdsInfo.respDTO) {
                            $($img).attr('src', gdsInfo.respDTO.mainPic.url);

                            var mainTitle=gdsInfo.respDTO.gdsName;
　　　　　　　　　　　　　　　　//通过商品ID+字符串组装成页面的元素Id，以取得相应的值
                            var mainTitleId="mainTitle"+goodsId;
                            var newMainTitle=$("#"+mainTitleId).val();
                            if(''!=newMainTitle && typeof(newMainTitle) != 'undefined' && newMainTitle.length>0 ){
                                mainTitle=newMainTitle;
                            }
                            $($gdsName).html('' + mainTitle + '');

                            var subTitle='';
                            if(gdsInfo.respDTO.gdsSubHead){
                                subTitle=gdsInfo.respDTO.gdsSubHead;
                            }
                            var subTitleId="subTitle"+goodsId;
                            var newSubTitle=$("#"+subTitleId).val();
　　　　　　　　　　　　　　　　　　//获取页面元素值后判空：
                            if(''!=newSubTitle && typeof(newSubTitle) != 'undefined' && newSubTitle.length>0 ){
                                subTitle=newSubTitle;
                            }

                            $($secondName).html('' + subTitle + '');

                            // $('#oldPrice',$(this)).addClass('prc-del');
                            if (opts.isPub) { //已发布
                                $($aLink).attr('href', gdsInfo.respDTO.url);
                                // $($aCarbtn).attr('href',gdsInfo.respDTO.url);
                            }

                            
                            if ('02' == gdsInfo.respDTO.sourceType) {
                                
                            } else {
　　　　　　　　　　　　　　　　　　//将字符串转换为数字，再四舍五入保留N位小数点
                                var newPrice = parseFloat(gdsInfo.respDTO.skuInfo.discountPrice / 100).toFixed(0);
                                $($newPrice).html('<em class="yuan">¥</em>' + newPrice);

                                var buttonWord = "抢购";
                                var buttonWordId="newButtonWord"+goodsId;
                                var newButtonWord=$("#"+buttonWordId).val();
                                if(''!=newButtonWord && newButtonWord.length>0 ){
                                    buttonWord=newButtonWord;
                                }
                                var linkUrl= "gdsdetail/"+goodsId+"-" ;

                                var ordPrice= parseFloat(gdsInfo.respDTO.skuInfo.guidePrice / 100).toFixed(0);
                                $($oldPrice).html('<small class="small">原价:￥'+ ordPrice+'</small>');

                                $($newPrice1).html('<strong>￥'+ newPrice +'<small>起</small></strong><small class="small">原价:￥'+ordPrice+'</small><a href="javascript:void(0);" ' +
                                    'id="linkBottonId" lazy-href="'+linkUrl+'">'+buttonWord+'</a>');

                            }
                        }

                        resolve();
                    }

                });