JS实现可用滑块滑动的缓动图代码

function $(id) { return document.getElementById(id); }//缓动轮播图var fhTimer;var fhNum = 0;var barNum = 0;fhTimer = setInterval(marquee, 20);function marquee() {  fhNum--;  barNum = fhNum;  if(fhNum < -2400) {    fhNum = 0;  }  $("fhc_ul").style.left = fhNum + "px";  if(fhNum < -2400) {    barNum = fhNum + 2400;  }  $("fhc_dBar").style.left = -(barNum / 2.75) + "px";}$("fhcShow").onmouseover = function() {  $("fhc_d_box").style.display = "block";  clearInterval(fhTimer);}$("fhc_d_box").onmouseover = function() {  $("fhc_d_box").style.display = "block";}$("fhcShow").onmouseout = function() {  $("fhc_d_box").style.display = "none";  fhTimer = setInterval(marquee, 20);}//鼠标悬浮在标题也在暂停滚动$("fhTit").onmouseover = function() {  clearInterval(fhTimer);}$("fhTit").onmouseout = function() {  fhTimer = setInterval(marquee, 20);}//滑块$("fhc_dBar").onmousedown = function(event) {  var event = event || window.event;  var leftValue = event.clientX - this.offsetLeft;  document.onmousemove = function(event) {    var evt = event || window.event;    var locationX = evt.clientX - leftValue;    if(locationX < 0) {      locationX = 0;    }    else if(locationX > 960 - 99) {      locationX = 960 - 99;    }    $("fhc_dBar").style.left = locationX + "px";    fhNum = -locationX * 2.75;    //如果选中了，就取消选中，防止出现bug    window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty();  }  document.onmouseup = function() {    document.onmousemove = null;//取消注册的这个事件  }}

<div class="fxhh_ctt">  <div class="fh_c_show" id="fhcShow">    <ul class="fh_c_under" id="fhc_ul">      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品1</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品2</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品3</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品4</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品5</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品6</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品7</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品8</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品9</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品10</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品11</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品12</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品1</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品2</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品3</p>        <img src="" alt="">      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <img src="" alt="">        <p class="botTit">商品4</p>      </a></li>      <li><a href=" " rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >        <p class="topTit">商品5</p>        <img src="" alt="">      </a></li>    </ul>  </div>  <!-- 滑块 -->  <div class="fhc_box" id="fhc_d_box">    <div class="fhc_drop" id="fhc_dBar"></div>  </div>  <!-- 滑块end --></div>CSS代码.fxhh .fxhh_ctt {  width: 990px;  background-color: #fff;  float: left;}.fxhh .fxhh_ctt .fh_c_show .fh_c_under img {  width: 150px;  height: 150px;}.fxhh .fxhh_ctt .fh_c_show {  width: 990px;  height: 260px;  background-color: #fff;  overflow: hidden;  position: relative;}.fxhh .fxhh_ctt .fh_c_show .fh_c_under {  width: 2000%;  position: absolute;}.fxhh .fxhh_ctt .fh_c_show .fh_c_under li {  float: left;  text-align: center;  width: 150px;  height: 180px;  margin-top: 40px;  margin-right: 50px;}.fxhh .fxhh_ctt .fh_c_show .fh_c_under li .topTit {  margin-bottom: 10px;}.fxhh .fxhh_ctt .fh_c_show .fh_c_under li .botTit {  margin-top: 10px;}.fxhh .fxhh_ctt .fhc_box {  display: none;  width: 960px;  height: 4px;  background-color: #f3f3f3;  margin: 0 auto;  position: absolute;  top: 250px;  left: 210px;}.fxhh .fxhh_ctt .fhc_drop {  width: 99px;  height: 9px;  border-radius: 4px;  background-color: #d8d8d8;  position: absolute;  top: -3px;}