html——轮播图轮播图—— data-interval="1000":1秒换张图片; data-wrap="false

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轮播图代码

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="./bootstrap/css/bootstrap.min.css">
<script src="./jquery/jquery-3.4.1.min.js"></script>
<!--引入js文件-->
<script src="./bootstrap/js/bootstrap.js"></script>
<style>
    .container {
        border: silver 1px solid;
    }
    .navbar-right{
        margin-right: 10px;
    }
</style>
</head>
<body>
<div id="carousel-example-generic" class="carousel slide" data-ride="carousel" data-interval="1000"
    data-wrap="false" data-pause="null">
    <!-- Indicators -->
    <!--圆点-->
    <ol class="carousel-indicators">
        <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
        <li data-target="#carousel-example-generic" data-slide-to="1"></li>
        <li data-target="#carousel-example-generic" data-slide-to="2"></li>
    </ol>
    <!-- Wrapper for slides -->
    <!--图片-->
    <div class="carousel-inner" role="listbox">
        <div class="item active">
            <img src="./imgs/cat.jpg" alt="..." style="margin: 0 auto; height: 500px;">
            <div class="carousel-caption">
                1
            </div>
        </div>
        <div class="item">
            <div style="text-align:center;">
                <img src="./imgs/dog.jpg" alt="..." style="margin: 0 auto; height: 500px;">
                <img src="./imgs/dog.jpg" alt="..." style="margin: 0 auto; height: 500px;">
                <img src="./imgs/dog.jpg" alt="..." style="margin: 0 auto; height: 500px;">
            </div>
            <div class="carousel-caption">
                2
            </div>
        </div>
        <div class="item">
            <img src="./images/libai.jpg" alt="..." style="margin: 0 auto; height: 500px;">
            <div class="carousel-caption">
                3
            </div>
        </div>
    </div>
    <!-- Controls -->
    <!--左右的箭头-->
    <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
        <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
        <span class="sr-only">Previous</span>
    </a>
    <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
    </a>
</div>
</body>
</html>

结果展示

代码总结

data-interval="1000":1秒换张图片;
data-wrap="false:是否轮回;
data-pause="null":鼠标在图片上不停止转换；
data-ride="carousel"：可以自动播放
data-target:指向轮播图的id
caption:描述内容
图片居中也可以是style="width:900px; margin:auto;"
href="#carousel-example-generic":关联到轮播图的ID;
data-slide="prev":作用前页，后页

提高

可以试着换换轮播图的样式。