DOM节点的增删改查以及class属性的操作

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .content{
            height: 1800px;
            background-color: white;
        }
        .shade{
            position: fixed;
            top:0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: black;
            opacity: 0.3;
        }
        .model{
            width: 200px;
            height:200px;
            background-color: white;
            position: absolute;
            top:50%;
            left: 50%;
            margin-top: -100px;
            margin-left: -100px;
        }
        .hide{
            display: none;
        }
    </style>
</head>
<body>
<div class="content">
    <button onclick="func()">show</button>
</div>
<div class="shade hide">

</div>
<div class="model hide">
    <button onclick="cancle()">取消</button>
</div>
<script>
    function func() {
        var ele_shade = document.getElementsByClassName('shade')[0]
        var ele_model = document.getElementsByClassName('model')[0]
        ele_shade.classList.remove('hide') //class属性的删除
        ele_model.classList.remove('hide')

    }
    function cancle() {
        var ele_shade = document.getElementsByClassName('shade')[0]
        var ele_model = document.getElementsByClassName('model')[0]
        ele_shade.classList.add('hide')//class属性的增加
        ele_model.classList.add('hide')
    }
</script>
</body>
</html>
class属性
1)className
2)classList
posted on 2018-06-12 15:17 wy0925 阅读(333) 评论(0) 收藏举报