js拖拽代码，前一张为运行结果，后一张为使用方法，请写出全部原代码代码

前一张为要运行实现的结果，后一张为使用方法，请写出全部代码，全部

第二张图的代码有问题，是针对文件拖放的。用下的就行了

<style>
    .container{border:solid 1px #000;width:400px;height:400px;float:left;user-select:none}
    .container .item{border:solid 1px #000;width:100px;height:100px;border-radius:50%;display:inline-block;background:#f00;text-align:center;line-height:100px;box-sizing:border-box}
    #to{margin:200px 0 0 200px}
</style>
<div class="container" id="from">
    <script>for (var i = 1; i <= 8; i++)document.write(`<div class="item" draggable="true">${i}</div>`)</script>
</div>
<div class="container" id="to"></div>
<script>
    var from = document.querySelector('#from'), to = document.querySelector('#to'),target;
    from.addEventListener('dragstart', function (e) {
        target = e.target; 
    })
    to.addEventListener('dragover', function (e) {
        e.preventDefault()
    })
    to.addEventListener('drop', function (e) {
        e.preventDefault();
        to.appendChild(target);
    })
</script>


<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Lazyload</title>
    <style>
      .drag {
        background-color: skyblue;
        position: absolute;
        line-height: 100px;
        text-align: center;
        width: 100px;
        height: 100px;
      }
    </style>
  </head>
  <body>
    <!-- left和top要写在行内样式里面 -->
    <div class="drag" style="left: 0; top: 0">按住拖动</div>
    <script src="./jquery-3.6.0.min.js"></script>
    <script>
      // 获取DOM元素
      let dragDiv = document.getElementsByClassName('drag')[0]
      // 鼠标按下事件 处理程序
      let putDown = function (event) {
        dragDiv.style.cursor = 'pointer'
        let offsetX = parseInt(dragDiv.style.left) // 获取当前的x轴距离
        let offsetY = parseInt(dragDiv.style.top) // 获取当前的y轴距离
        let innerX = event.clientX - offsetX // 获取鼠标在方块内的x轴距
        let innerY = event.clientY - offsetY // 获取鼠标在方块内的y轴距
        // 按住鼠标时为div添加一个border
        dragDiv.style.borderStyle = 'solid'
        dragDiv.style.borderColor = 'red'
        dragDiv.style.borderWidth = '3px'
        // 鼠标移动的时候不停的修改div的left和top值
        document.onmousemove = function (event) {
          dragDiv.style.left = event.clientX - innerX + 'px'
          dragDiv.style.top = event.clientY - innerY + 'px'
          // 边界判断
          if (parseInt(dragDiv.style.left) <= 0) {
            dragDiv.style.left = '0px'
          }
          if (parseInt(dragDiv.style.top) <= 0) {
            dragDiv.style.top = '0px'
          }
          if (
            parseInt(dragDiv.style.left) >=
            window.innerWidth - parseInt(dragDiv.style.width)
          ) {
            dragDiv.style.left =
              window.innerWidth - parseInt(dragDiv.style.width) + 'px'
          }
          if (
            parseInt(dragDiv.style.top) >=
            window.innerHeight - parseInt(dragDiv.style.height)
          ) {
            dragDiv.style.top =
              window.innerHeight - parseInt(dragDiv.style.height) + 'px'
          }
        }
        // 鼠标抬起时，清除绑定在文档上的mousemove和mouseup事件
        // 否则鼠标抬起后还可以继续拖拽方块
        document.onmouseup = function () {
          document.onmousemove = null
          document.onmouseup = null
          // 清除border
          dragDiv.style.borderStyle = ''
          dragDiv.style.borderColor = ''
          dragDiv.style.borderWidth = ''
        }
      }
      // 绑定鼠标按下事件
      dragDiv.addEventListener('mousedown', putDown, false)
    </script>
  </body>
</html>

参考一下思路

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