编程狮在线代码实例

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<!DOCTYPE html>
<html>
​
<head>
    <title>W3.CSS(w3cschool.cn)</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" charset="UTF-8">
    <link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
    <style>
        .mySlides {display:none;}
    </style>
</head>
​
<body>
​
<div class="w3-container">
    <h2>动画幻灯片</h2>
    <p>使用w3-animate- *类从屏幕的顶部，底部，左侧或右侧滑动或淡入一个元素。</p>
</div>
​
<div class="w3-content w3-section" style="max-width:500px">
    <img class="mySlides w3-animate-top" src="https://atts.w3cschool.cn/img_rr_01.jpg" style="width:100%">
    <img class="mySlides w3-animate-bottom" src="https://atts.w3cschool.cn/img_rr_02.jpg" style="width:100%">
    <img class="mySlides w3-animate-top" src="https://atts.w3cschool.cn/img_rr_03.jpg" style="width:100%">
    <img class="mySlides w3-animate-bottom" src="https://atts.w3cschool.cn/img_rr_04.jpg" style="width:100%">
</div>
​
<script>
    var myIndex = 0;
    carousel();
​
    function carousel() {
        var i;
        var x = document.getElementsByClassName("mySlides");
        for (i = 0; i < x.length; i++) {
            x[i].style.display = "none";
        }
        myIndex++;
        if (myIndex > x.length) {myIndex = 1}
        x[myIndex-1].style.display = "block";
        setTimeout(carousel, 2500);
    }
</script>
​
​
</body>
</html>
实例代码
运行结果