简单拖拽案例

最新推荐文章于 2021-11-11 12:18:15 发布

渡梵尘

最新推荐文章于 2021-11-11 12:18:15 发布

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本文链接：https://blog.youkuaiyun.com/lx_dfc/article/details/80472007

版权

<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    *{
    padding: 0;
    margin: 0;
    list-style: none;
    }

    .leftBox,
    .rightBox{
      width: 100px;
      height: 100px;
      border: 1px solid #000;
      position: relative;
      border-radius: 10px;
      display: inline-block;
      margin:100px;
    }
    .circle{
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: yellowgreen;
      position: absolute;
      /*在盒子中居中*/
      top: 50%;
      left: 50%;
      transform: translate(-50%,-50%);
      cursor: move;
      z-index: 2;
    }
  </style>
</head>
<body>
<div class='leftBox'>
  <div class="circle">
  </div>
</div>
<div class="rightBox">
</div>
<script>
 
  var circle =document.querySelector(".circle");

  circle.onmousedown = function (e) {
    e = e || window.event;
    var spaceX = e.clientX - circle.offsetLeft;
    var spaceY = e.clientY - circle.offsetTop;
    document.onmousemove = function (event) {
      event = event || window.event;
      circle.style.left = event.pageX - spaceX +'px';
      circle.style.top = event.pageY - spaceY +'px';
    }
  };
  document.onmouseup = function () {
    document.onmousemove = null;
  };

</script>
</body>
</html>