javascript 如何更改 chartjs 模板上的轴、标题、图例格式
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How do I change axis, title, legend formatting on chartjs template
提问by user3089117
still new to javascript and html, I have managed to build a simple calculator that will also graph some of the outputs. To do so I am using the below chartjs template. I would like to be able to change the font for the y-axis, title, and legend, as it looks really 'choppy' when it is created, however, I do not know where I would find/define the appropriate paramaters and what they would be. Also, how would I make the chart title wrap into a second line if it gets to long for one? Can I specify these items in my script or do I have to manipulate the dx.chartjs file, and if so where do I need to make the changes?
我还是 javascript 和 html 的新手，我设法构建了一个简单的计算器，它也可以绘制一些输出的图形。为此，我使用了以下 chartjs 模板。我希望能够更改 y 轴、标题和图例的字体，因为它在创建时看起来非常“断断续续”，但是，我不知道在哪里可以找到/定义适当的参数以及什么他们将是。另外，如果图表标题太长，我如何将图表标题换到第二行？我可以在我的脚本中指定这些项目还是必须操作 dx.chartjs 文件，如果可以，我需要在哪里进行更改？
Thank you so much for your help
非常感谢你的帮助
<html>
<head>
<title> Savings </title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<script src="js/jquery-1.10.2.min.js"></script>
<script src="js/knockout-3.0.0.js"></script>
<script src="js/globalize.min.js"></script>
<script src="js/dx.chartjs.js"></script>
</head>
<script language="javascript">
function btnCalculateTotal_Click()
{
houses = 0;
cars = 0;
houses = Number(frmSimpleCalculator.txtValue1.value);
cars = Number(frmSimpleCalculator.txtValue2.value);
sngTotal = houses + cars
frmSimpleCalculator.txtTotal.value = sngTotal;
test = 200
var dataSource = [{ savings: "", Houses: sngTotal, Cars: 300 },];
$("#chartContainer").dxChart({
dataSource: dataSource,
commonSeriesSettings: {
argumentField: "savings",
type: "bar",
hoverMode: "allArgumentPoints",
selectionMode: "allArgumentPoints",
label: {
visible: true,
format: "fixedPoint",
precision: 0
}
},
series: [
{ valueField: "Houses", name: "Houses" },
{ valueField: "Cars", name: "Cars" }
],
title: "Savings potential",
legend: {
verticalAlignment: "bottom",
horizontalAlignment: "center"
},
pointClick: function (point) {
this.select();
}
});
}
</script>
<body bgcolor="#aaaaaa">
<table style="background-color:black; color:white; width:800">
<tr>
<td>
<strong>calculator</strong>
</td>
</tr>
</table>
<form name="frmSimpleCalculator" action="" method="get">
<fieldset name="fraSimpleCalculator" style="width:1">
<legend>Economic Savings Calculator</legend>
<table width="300" border="0">
<!-- Value 1 -->
<tr>
<td align="left">
Houses:
</td>
<td align="right">
<input type="text" value="50000" name="txtValue1" size="10" maxlength="10" style="text-align:right">
</td>
</tr>
<!-- Value 2 -->
<tr>
<td align="left">
Cars:
</td>
<td align="right">
<input type="text" value="25" name="txtValue2" size="10" maxlength="10" style="text-align:right">
</td>
</tr>
<!-- Horizontal rule -->
<tr>
<td align="center" colspan="2">
<hr />
</td>
</tr>
<!-- Total -->
<tr>
<td align="left">
Total:
</td>
<td align="right">
<input type="text" value="0" name="txtTotal" size="10" maxlength="5" style="text-align:right">
</td>
</tr>
<!-- Calculate Button -->
<tr>
<td align="center" colspan="2">
<input type="button" value="Calculate Total" name="btnCalculateTotal" style="width:150" OnClick="btnCalculateTotal_Click();">
</td>
</tr>
<!-- Calculate Chart Button -->
<tr>
<td align="center" colspan="2">
<input type="button" value="Update Chart" name="btnCalculateChart" style="width:150" OnClick="Thomas();">
</td>
</tr>
<div class="content">
<div class="pane">
<div class="long-title"><h3></h3></div>
<div id="chartContainer" style="width: 250px; height: 440px;" style="position:absolute; TOP:200px; LEFT:350px"></div>
</div>
</div>
</body>
</html>
回答by Andrey Kuleshov
1) you can set font options for title, legend and axes through "font" property of corresponding options' element
1）您可以通过相应选项元素的“字体”属性设置标题、图例和轴的字体选项
legend: {
font: {
color: 'black',
family: 'Zapf-Chancery, cursive',
opacity: 1,
weight: 700
}
}
You can find more sample in ChartJS documentation.
您可以在ChartJS 文档中找到更多示例。
2) You can use HTML tag brto wrap your title to second line
2) 您可以使用 HTML 标签br将您的标题包装到第二行
title: "This is my<br/>long title"
