Chart.js：图表未显示 [英] Chart.js: chart not displayed
本文介绍了Chart.js：图表未显示的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想使用 Chart.js 创建令人惊叹的图表一个网页。
I'd like to use Chart.js to create stunning charts into a webpage.
在文档之后，我编写了如下代码：
Following the documentation, I wrote the code as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>Chart.js demo</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/0.2.0/Chart.min.js" type="text/javascript"></script>
</head>
<body>
<script>
var pieData = [
{
value: 20,
color:"#878BB6"
},
{
value : 40,
color : "#4ACAB4"
},
{
value : 10,
color : "#FF8153"
},
{
value : 30,
color : "#FFEA88"
}
];
// Get the context of the canvas element we want to select
var countries= document.getElementById("countries").getContext("2d");
new Chart(countries).Pie(pieData);
</script>
<h1>Chart.js Sample</h1>
<canvas id="countries" width="600" height="400"></canvas>
</body>
</html>
图表没有出现的原因是什么？
Which is the reason why the chart doesn't appear?
推荐答案
首先，你必须在canvas声明之后放置你的脚本。
之后，删除饼图选项（或定义它们）。
First, you have to put your script after the canvas declaration. After that, delete the pie options (or define them).
<html>
<head>
<meta charset="utf-8"/>
<title>Chart.js demo</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/0.2.0/Chart.min.js" type="text/javascript"></script>
</head>
<body>
<h1>Chart.js Sample</h1>
<canvas id="countries" width="600" height="400"></canvas>
<script>
var pieData = [
{
value: 20,
color:"#878BB6"
},
{
value : 40,
color : "#4ACAB4"
},
{
value : 10,
color : "#FF8153"
},
{
value : 30,
color : "#FFEA88"
}
];
// Get the context of the canvas element we want to select
var countries= document.getElementById("countries").getContext("2d");
new Chart(countries).Pie(pieData);
</script>
</body>
这篇关于Chart.js：图表未显示的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
