设置滚动位置

//返回顶部
$('.leftTop').click(function(){
     $('body,html').animate({scrollTop:0},500);
 });

到指定位置
html:

<!-- left 导航-->
<div class="nav-left">
    <ul class="floatCtro">
        <li data-key="daPeiTaoZhuang">
            <a href="javascript:;">搭配套装</a>
            <span></span>
        </li>
        <li data-key="woshi">
            <a href="javascript:;">卧室</a>
            <span></span>
        </li>
        <li data-key="keting">
            <a href="javascript:;">客厅</a>
            <span></span>
        </li>
        <li data-key="goon">
            <a href="javascript:;">还没逛够</a>
            <span></span>
        </li>
        <span class="leftTop"><i class="tops"></i>顶部</span>
    </ul>
</div>

<div class="main-box" id="keting">
    <div class="border-clear">
        <h3 class="f1 l">1F 卧室</h3>
        <div class="floor-tag r">
            <a target="_blank" href='javascript:void(0);' class="more">更多<i></i></a>
        </div>
    </div>
    <div class="content-clear">
        <div class="feature-img l">
            <a target="_blank" href="javascript:void(0);" class="floor_good1"><img src="__PUBLIC__/images/floor1.jpg"></a>
            <ul class="floor_good2 clearfix">
                <li>
                    <a href="javascript:void(0);">床头柜床头柜床头柜</a>
                </li>
                <li>
                    <a href="javascript:void(0);">床头柜</a>
                </li>
                <li>
                    <a href="javascript:void(0);">床头柜</a>
                </li>
                <li>
                    <a href="javascript:void(0);">床头柜</a>
                </li>
                <li>
                    <a href="javascript:void(0);">床头柜</a>
                </li>
                <li>
                    <a href="javascript:void(0);">床头柜</a>
                </li>
            </ul>
        </div>
        <div class="floor_banner l">
            <div class="slider">
                <ul class="slider-main" id="slider-main_{$k1}">
                    
                </ul>
                <div class="slider-extra">
                    <ul class="slider-nav" id="slider-nav_{$k1}">
                        <li class="slider-item"></li><li class="slider-item"></li><li class="slider-item"></li>
                    </ul>
                    <div class="slider-page" id="slider-page_{$k1}">
                        <a class="slider-pre" href="javascript:;;">&lt;</a>
                        <a class="slider-next" href="javascript:;;">&gt;</a>
                    </div>
                </div>
            </div>
        </div>
        <ul class="floor_right l">
            <li>
                <div>
                    <a href="javascript:void(0);" class="floor_good_title">海尔直驱狂想曲</a>
                    <a href="javascript:void(0);" class="floor_good_subtitle">韩式臻白五抽书桌</a>
                    <a href="javascript:void(0);">
                        <img src="__PUBLIC__/images/floor2.jpg">
                    </a>
                </div>
            </li>
            <li>
                <div>
                    <a href="javascript:void(0);" class="floor_good_title">海尔直驱狂想曲</a>
                    <a href="javascript:void(0);" class="floor_good_subtitle">韩式臻白五抽书桌</a>
                    <a href="javascript:void(0);">
                        <img src="__PUBLIC__/images/floor2.jpg">
                    </a>
                </div>
            </li>
            <li>
                <div>
                    <a href="javascript:void(0);" class="floor_good_title">海尔直驱狂想曲</a>
                    <a href="javascript:void(0);" class="floor_good_subtitle">韩式臻白五抽书桌</a>
                    <a href="javascript:void(0);">
                        <img src="__PUBLIC__/images/floor2.jpg">
                    </a>
                </div>
            </li>
            <li>
                <div>
                    <a href="javascript:void(0);" class="floor_good_title">海尔直驱狂想曲</a>
                    <a href="javascript:void(0);" class="floor_good_subtitle">韩式臻白五抽书桌</a>
                    <a href="javascript:void(0);">
                        <img src="__PUBLIC__/images/floor2.jpg">
                    </a>
                </div>
            </li>
            <li>
                <div>
                    <a href="javascript:void(0);" class="floor_good_title">海尔直驱狂想曲</a>
                    <a href="javascript:void(0);" class="floor_good_subtitle">韩式臻白五抽书桌</a>
                    <a href="javascript:void(0);">
                        <img src="__PUBLIC__/images/floor2.jpg">
                    </a>
                </div>
            </li>
            <li>
                <div>
                    <a href="javascript:void(0);" class="floor_good_title">海尔直驱狂想曲</a>
                    <a href="javascript:void(0);" class="floor_good_subtitle">韩式臻白五抽书桌</a>
                    <a href="javascript:void(0);">
                        <img src="__PUBLIC__/images/floor2.jpg">
                    </a>
                </div>
            </li>
        </ul>
    </div>
</div>

js:

$('.floatCtro li').click(function(){
     var id = $(this).attr("data-key");
     var topVal = $('#'+id).offset().top-50;
     $('body,html').animate({scrollTop:topVal},500);
 });