#box {
  /*margin: 0 auto;*/
  width: 1750px;
  border: 1px solid black;
  display: block;
  position: relative;
  left: 0;
  }

  #box>div {
  width: 250px;
  height: 50px;
  display: inline-block;
  text-align: center;
  float: left;
  }

  h1 {
  padding: 0;
  margin: 0;
  }

<div style="width: 1000px;overflow: hidden;margin: auto;position: relative;">
  <div id="box">
  <div style="background: lemonchiffon;">
   <h1>one</h1></div>
  <div style="background: lightblue;">
   <h1>tow</h1></div>
  <div style="background: gold;">
   <h1>three</h1></div>
  <div style="background: blue;">
   <h1>four</h1></div>
  <div style="background: orange;">
   <h1>five</h1></div>
  <div style="background: aqua;">
   <h1>six</h1></div>
  <div style="background: brown;">
   <h1>seveen</h1></div>
  </div>
  <h1>拖動(dòng)上面的顏色模塊</h1>
 <p>實(shí)際原理還是輪播圖</p>
</div>

<div style="width: 1000px;overflow: hidden;margin: auto;position: relative;">

<script src="jquery-2.1.0.js" type="text/javascript" charset="utf-8"></script>
 <script type="text/javascript">
 let box = document.getElementById('box')
 $box = $('#box')
 let mouseState = false; //鼠標(biāo)默認(rèn)狀態(tài)
 let startX = 0;
 let startY = 0;
 let moveDirection = 0 //鼠標(biāo)拖動(dòng)距離
 $boxLeft = parseInt($box.css('left'))//表示內(nèi)容塊被偏移的值
 //鼠標(biāo)按下事件
 box.addEventListener('mousedown', function(e) {
  //更改鼠標(biāo)狀態(tài)
  //參數(shù)e為鼠標(biāo)
  mouseState = true
  //獲取鼠標(biāo)坐標(biāo)
  startX = e.clientX
  startY = e.clientY
  //鼠標(biāo)拖動(dòng)初始化
  moveDirection = 0
  $boxLeft = parseInt($box.css('left'))
 })
 //鼠標(biāo)移動(dòng)狀態(tài)
 box.addEventListener('mousemove', function(e) {
  //判斷鼠標(biāo)是不是被按下中移動(dòng)
  if(mouseState) {
  //判斷是向左還是向右拖動(dòng)鼠標(biāo)
  moveDirection = e.clientX - startX
  //向右移動(dòng)
  box.style.left = $boxLeft + moveDirection + 'px'
  }
 })
 //鼠標(biāo)彈起事件
 box.addEventListener('mouseup', function(e) {
  mouseState = false
  if(moveDirection > 0) {
  //$boxLeft<0表示已經(jīng)看到最左的模塊，不能在向右拖拉
  $boxLeft = parseInt($box.css('left'))
  //取余，比如拖動(dòng)了52px，實(shí)際內(nèi)容塊就250px，偏移余下的px就能看的完整的內(nèi)容塊
  $num = $boxLeft % 250
  if($boxLeft < 0) {
   $box.animate({
   left: $boxLeft - $num + 'px'
   }, 500, function() {
   console.log(parseInt($box.css('left')))
   })
  } else {
  //向右偏移，如果$boxLeft大于等于0的話 那就是還是第一個(gè)顏色模塊，不允許被偏移
   $box.animate({
   left: 0 + 'px'
   }, 500, function() {})
  }
  } else if(moveDirection < 0) {
  //$boxLeft>-750表示已經(jīng)看到最右邊的模塊，不能在向左拖拉
  $boxLeft = parseInt($box.css('left'))
  $num = 250 + $boxLeft % 250
  if($boxLeft > -750) {
   $box.animate({
   left: $boxLeft - $num + 'px'
   }, 500, function() {
   console.log(parseInt($box.css('left')))
   })
  }else{
  //向左偏移，如果$boxLeft小于等于-750px的話 那就是最后一個(gè)顏色模塊，不允許被偏移
   $box.animate({
   left: -750 + 'px'
   }, 500, function() {})
  }
  }
 })
</script>