html - Bootstrap Carousel：字幕不显示
问题描述
我想在 BS carousel 的图表上显示标题（h3/p 标签）。它没有显示出来，我已经推荐了 w3 学校并进行了一些更改，但根本不起作用。
以下是我尝试过的：
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
完整的html：
<!DOCTYPE html>
<html lang="en">
<head>
<style>
.carousel-indicators li {
background-color: #BFC9CA !important;
}
.carousel-indicators .active {
background-color: #BFC9CA !important;
}
h3
{
background-color: gold !important;
}
.carousel-inner {
width: 100%;
max-height: 500px !important;
}
</style>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
<script type='text/javascript' src='https://www.gstatic.com/charts/loader.js'></script>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>google.charts.load('current', { packages: ['corechart'] });</script>
<script language='JavaScript'>function drawChart(PassCount, FailCount, DivID) { var data = google.visualization.arrayToDataTable([['Status', 'Outcome', { role: 'style' }], ['Passed', PassCount, '#8BC34A'], ['Failed', FailCount, '#ff4c4c']]); var groupData = google.visualization.data.group(data, [{ column: 0, modifier: function () { return 'total' }, type: 'string' }], [{ column: 1, aggregation: google.visualization.data.sum, type: 'number' }]); var formatPercent = new google.visualization.NumberFormat({ pattern: '#,##0.0%' }); var formatShort = new google.visualization.NumberFormat({ pattern: 'short' }); var view = new google.visualization.DataView(data); view.setColumns([0, 1, 2, { calc: function (dt, row) { var amount = formatShort.formatValue(dt.getValue(row, 1)); var percent = formatPercent.formatValue(dt.getValue(row, 1) / groupData.getValue(0, 1)); return amount + ' (' + percent + ')'; }, type: 'string', role: 'annotation' }]); var options = { 'legend': 'none', tooltip: { trigger: 'none' }, 'width': 650, 'height': 400, animation: { duration: 1500, startup: true } }; var chart = new google.visualization.ColumnChart(document.getElementById(DivID)); chart.draw(view, options); } google.charts.setOnLoadCallback(function () { drawChart(70, 5, 'GoogleColChart_0'); }); google.charts.setOnLoadCallback(function () { drawChart(80, 10, 'GoogleColChart_1'); }); google.charts.setOnLoadCallback(function () { drawChart(90, 15, 'GoogleColChart_2'); });</script>
<link rel='icon' type='Icon.ico' href='Icon.ico' />
</head>
<body>
<div class="container">
<h2>Carousel Example</h2>
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner">
<div align="center" class="item active" id='GoogleColChart_0' style='width:800; height:500;border-style:groove;border-width: 1px;'>
<script type='text/javascript'>drawChart(70, 5, 'GoogleColChart_0');</script>
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
</div>
<div align="center" class="item" id='GoogleColChart_1' style='width:800; height:500;border-style:groove;border-width: 1px;'>
<script type='text/javascript'>drawChart(80, 10, 'GoogleColChart_1');</script>
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
</div>
<div align="center" class="item" id='GoogleColChart_2' style='width:800; height:500;border-style:groove;border-width: 1px;'>
<script type='text/javascript'>drawChart(90, 15, 'GoogleColChart_2');</script>
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
</div>
</div>
<!-- Left and right controls -->
<a class="left carousel-control" href="#myCarousel" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#myCarousel" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
<span class="sr-only">Next</span>
</a>
</div>
</div>
</body>
</html>
标题应显示在提到的位置。
解决方案
您的代码的问题是您的目标是具有类的元素，class="item active"并且该元素被您的drawChart函数覆盖。
一种可能的解决方案是将 id 移动到内部 div 中，如我的解决方案所示：
<!DOCTYPE html>
<html lang="en">
<head>
<style>
.carousel-indicators li {
background-color: #BFC9CA !important;
}
.carousel-indicators .active {
background-color: #BFC9CA !important;
}
h3
{
background-color: gold !important;
}
.carousel-inner {
width: 100%;
max-height: 500px !important;
}
</style>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
<script type='text/javascript' src='https://www.gstatic.com/charts/loader.js'></script>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>google.charts.load('current', { packages: ['corechart'] });</script>
<script language='JavaScript'>function drawChart(PassCount, FailCount, DivID) { var data = google.visualization.arrayToDataTable([['Status', 'Outcome', { role: 'style' }], ['Passed', PassCount, '#8BC34A'], ['Failed', FailCount, '#ff4c4c']]); var groupData = google.visualization.data.group(data, [{ column: 0, modifier: function () { return 'total' }, type: 'string' }], [{ column: 1, aggregation: google.visualization.data.sum, type: 'number' }]); var formatPercent = new google.visualization.NumberFormat({ pattern: '#,##0.0%' }); var formatShort = new google.visualization.NumberFormat({ pattern: 'short' }); var view = new google.visualization.DataView(data); view.setColumns([0, 1, 2, { calc: function (dt, row) { var amount = formatShort.formatValue(dt.getValue(row, 1)); var percent = formatPercent.formatValue(dt.getValue(row, 1) / groupData.getValue(0, 1)); return amount + ' (' + percent + ')'; }, type: 'string', role: 'annotation' }]); var options = { 'legend': 'none', tooltip: { trigger: 'none' }, 'width': 650, 'height': 400, animation: { duration: 1500, startup: true } }; var chart = new google.visualization.ColumnChart(document.getElementById(DivID)); chart.draw(view, options); } google.charts.setOnLoadCallback(function () { drawChart(70, 5, 'GoogleColChart_0'); }); google.charts.setOnLoadCallback(function () { drawChart(80, 10, 'GoogleColChart_1'); }); google.charts.setOnLoadCallback(function () { drawChart(90, 15, 'GoogleColChart_2'); });</script>
<link rel='icon' type='Icon.ico' href='Icon.ico' />
</head>
<body>
<div class="container">
<h2>Carousel Example</h2>
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner">
<div align="center" class="item active">
<div id='GoogleColChart_0' style='width:800; height:500;border-style:groove;border-width: 1px;'>
<script type='text/javascript'>drawChart(70, 5, 'GoogleColChart_0');</script>
</div>
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
</div>
<div align="center" class="item">
<div id='GoogleColChart_1' style='width:800; height:500;border-style:groove;border-width: 1px;'>
<script type='text/javascript'>drawChart(80, 10, 'GoogleColChart_1');</script>
</div>
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
</div>
<div align="center" class="item">
<div id='GoogleColChart_2' style='width:800; height:500;border-style:groove;border-width: 1px;'>
<script type='text/javascript'>drawChart(90, 15, 'GoogleColChart_2');</script>
</div>
<div class="carousel-caption">
<h3> Test caption1 </h3>
<p> Test caption2 </p>
</div>
</div>
</div>
<!-- Left and right controls -->
<a class="left carousel-control" href="#myCarousel" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#myCarousel" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
<span class="sr-only">Next</span>
</a>
</div>
</div>
</body>
</html>
我建议清理一下您的代码： - 将调用移至drawChart在准备好的文档上运行的脚本。-!important从 CSS 中删除。
希望能帮助到你！
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