JS 盒子拖拽案列

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

~~这个我也不是很懂,等我学会再更新,仅此留个标记;~~

效果:

html代码:

css代码:

js代码:

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