jquery如何实现手风琴展开效果

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手风琴模式实现方式：

dom层代码：

<div class="accordionWrap">
        <div class="wrap">
        <div class="title">
            <span>内容一</span>
            <span class="arrow slideTog"></span>
        </div>
        <div class="accordionCon">
            <div>
                <p>锦瑟无端五十弦，一弦一柱思华年。</p>
                <p>庄生晓梦迷蝴蝶，望帝春心托杜鹃。</p>
                <p>沧海月明珠有泪，蓝田日暖玉生烟。</p>
                <p>此情可待成追忆？只是当时已惘然。</p>
            </div>
            <div class="moreCon" >
                <p>相见时难别亦难，东风无力百花残。</p>
                <p>春蚕到死丝方尽，蜡炬成灰泪始干。</p>
                <p>晓镜但愁云鬓改，夜吟应觉月光寒。</p>
                <p>蓬山此去无多路，青鸟殷勤为探看。</p>
            </div>
        </div>
        </div>
        <div class="wrap">
            <div class="title">
                <span>内容一</span>
                <span class="arrow slideTog"></span>
            </div>
            <div class="accordionCon">
                <div>
                    <p>锦瑟无端五十弦，一弦一柱思华年。</p>
                    <p>庄生晓梦迷蝴蝶，望帝春心托杜鹃。</p>
                    <p>沧海月明珠有泪，蓝田日暖玉生烟。</p>
                    <p>此情可待成追忆？只是当时已惘然。</p>
                </div>
                <div class="moreCon" >
                    <p>相见时难别亦难，东风无力百花残。</p>
                    <p>春蚕到死丝方尽，蜡炬成灰泪始干。</p>
                    <p>晓镜但愁云鬓改，夜吟应觉月光寒。</p>
                    <p>蓬山此去无多路，青鸟殷勤为探看。</p>
                </div>
            </div>
        </div>
        <div class="wrap">
            <div class="title">
                <span>内容一</span>
                <span class="arrow slideTog"></span>
            </div>
            <div class="accordionCon">
                <div>
                    <p>锦瑟无端五十弦，一弦一柱思华年。</p>
                    <p>庄生晓梦迷蝴蝶，望帝春心托杜鹃。</p>
                    <p>沧海月明珠有泪，蓝田日暖玉生烟。</p>
                    <p>此情可待成追忆？只是当时已惘然。</p>
                </div>
                <div class="moreCon" >
                    <p>相见时难别亦难，东风无力百花残。</p>
                    <p>春蚕到死丝方尽，蜡炬成灰泪始干。</p>
                    <p>晓镜但愁云鬓改，夜吟应觉月光寒。</p>
                    <p>蓬山此去无多路，青鸟殷勤为探看。</p>
                </div>
            </div>
        </div>
</div>

css代码：

 .accordionWrap{
    width: 218px;
    background:#1890ff;
    border-radius: 4px;
    position:absolute;
    left: 10px;
    top: 50px;
    padding: 10px;
    box-sizing: border-box;
    .wrap{
        line-height: 18px;
     .title{
        span{
        font-size: 12px;
        font-family: SourceHanSansCN-Regular, SourceHanSansCN;
        font-weight: 400;
        color: #fff;
         }
           .arrow{
            width: 12px;
            height: 7px;
            background:url("../img/arrow.svg") no-repeat;
            background-size: 100% 100%;
            float:right;
            margin-top: 5px;
            transform: rotate(180deg);
            cursor: pointer;
            transition: all 0.5s;
        }
       .slideTogExchange {
            width: 12px;
            height: 7px;
            background: url('../img/arrow.svg') no-repeat;
            background-size: 100% 100%;
            float:right;
            margin-top: 10px;
            cursor: pointer;
            transform: rotate(0deg);
          }
     }
     .accordionCon{
         border-top: 1px dashed #45fff8;
         border-bottom: 1px solid #dddddd;
        p{
        font-size: 12px;
        font-family: SourceHanSansCN-Regular, SourceHanSansCN;
        font-weight: 400;
        color: #fff;
        }
        .moreCon{
            p{
            color: #45FFF8 !important;
            }
        }
        }
    }
 }

js操作dom的时候一定要注意层级之间的关系

 $(function () {
    // 点击箭头展开隐藏的内容
     $(".slideTog").click(function () {
     var hasClass = $(this).hasClass('slideTogExchange')
      if (hasClass) {
$(this).parent().siblings('.accordionCon').children('.moreCon').slideUp()
 $(this).removeClass('slideTogExchange')
 } else {           $(this).parent().siblings('.accordionCon').children('.moreCon').slideDown()
 $(this).addClass('slideTogExchange')
            }       $(this).parents('.wrap').siblings('.wrap').children('.accordionCon').children('.moreCon').slideUp().removeClass('slideTogExchange')     $(this).parents('.wrap').siblings('.wrap').find('.slideTog').removeClass('slideTogExchange')
        });
    })

实现效果如下：

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