JS实现盒子拖拽效果

时间:2020-05-17 阿猫阿狗哈人气:0

本文实例为大家分享了JS实现盒子拖拽效果的具体代码，供大家参考，具体内容如下

效果:

html代码:

<!DOCTYPE html>
<html lang="en">
 
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>拖拽</title>
<body>
  <div class="leftBox"></div>
  <div class="rightBox">
    <!-- 开启拖拽属性draggable -->    
    <div class="circle" draggable="true"></div>
  </div>
</body>
 
</html>

css代码:

<style>
    .leftBox {
      display: inline-block;
      width: 100px;
      height: 100px;
      border: 1px solid black;
      border-radius: 10px;
      position: relative;
    }
 
    .rightBox {
      display: inline-block;
      width: 100px;
      height: 100px;
      border: 1px solid black;
      border-radius: 10px;
      position: relative;
    }
 
    .circle {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: radial-gradient(25px at center, white, skyblue);
      /* 绝对居中 */
      position: absolute;
      left: 50%;
      margin-left: -25px;
      top: 50%;
      margin-top: -25px;
    }
  </style>

js代码:

<script>
  //获取dom元素,分别是左盒子 圆圈 右盒子
  var leftBox = document.querySelector('.leftBox');
  var circle = document.querySelector('.circle');
  var rightBox = document.querySelector('.rightBox');
  var text = document.querySelector('.text');
 
  //移动circle
  circle.
 
  //开启左盒子的移入事件
  leftBox.ondragover = function (event) {
    event.preventDefault();
  }
  leftBox.ondrop = function () {
    leftBox.appendChild(circle);
  }
 
  //开启右盒子的移入事件
  rightBox.ondragover = function (event) {
    event.preventDefault();
  }
  rightBox.ondrop = function () {
    rightBox.appendChild(circle);
  }
 
</script>

关于事件的用法,官方用到了object.addEventListener("dragover", myScript)和event.target.id

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