在我的頁面上,我有jQuery創建選項卡,並且我有Chart.js創建折線圖。它們都能正常工作,除非我無法讓Chart.js在jQuery選項卡中顯示折線圖。我不明白什麼是jQuery選項卡可能會阻止圖表顯示。允許Chart.js使用jQuery選項卡
我從Chrome中得到的唯一錯誤是「遺漏的類型錯誤:無法調用空的‘的getContext’」指的是線64
如何去使這項工作?
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<!--[if lt IE 9]><script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script><![endif]-->
<title></title>
<meta name="keywords" content="" />
<meta name="description" content="" />
<link href="css/style.css" rel="stylesheet">
<!--Chart.js stuff-->
<script src="js/Chart.js"></script>
<meta name = "viewport" content = "initial-scale = 1, user-scalable = no">
<style>
canvas{
}
</style>
<!--jQuery/jQuery UI files-->
<link href="css/smoothness/jquery-ui-1.10.3.custom.css" rel="stylesheet">
<script src="js/jquery-1.9.1.js"></script>
<script src="js/jquery-ui-1.10.3.custom.js"></script>
<!--To enable jQuery elements-->
<script>
$(function()
{
$("#tabs").tabs();
});
</script>
</head>
<body>
<script>
var lineChartData = {
labels : ["January","February","March","April","May","June","July"],
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
pointColor : "rgba(220,220,220,1)",
pointStrokeColor : "#fff",
data : [65,59,90,81,56,55,40]
},
{
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
pointColor : "rgba(151,187,205,1)",
pointStrokeColor : "#fff",
data : [28,48,40,19,96,27,100]
}
]
}
var myLine = new Chart(document.getElementById("canvas").getContext("2d")).Line(lineChartData);
</script>
<div class="wrapper">
<div class="middle">
<div class="container">
<main class="content">
<div id="tabs">
<ul>
<li><a href="#tabs-1">Tab 1</a></li>
<li><a href="#tabs-2">Tab 2</a></li>
</ul>
<div id="tabs-1">
<!--Trying to display the chart here is not working-->
<canvas id="canvas" height="450" width="600"></canvas>
</div>
<div id="tabs-2">
<p></p>
</div>
</div>
</main><!-- .content -->
</div><!-- .container-->
</div><!-- .middle-->
</div><!-- .wrapper -->
</body>
</html>
這裏這個頁面上我已經使用ETABS jQuery來創建標籤並在標籤內容div中插入畫布標籤。它與chart.js工作正常。 –