使用js打印canvas.js图表
使用js打印canvas.js图表
提问于 2014-10-20 14:56:06
我想用javascript打印canvas.js图表。打印代码。
当我单击“打印”按钮时，浏览器中的“打印”弹出将显示“打印预览无”。
我如何解决这个问题？
var html = "<html>";
html += document.getElementById("chartContainerInPT").innerHTML;
html += "</html>";
var printWin = window.open('','','left=0,top=0,width=1,height=1,toolbar=0,scrollbars=0,status =0');
printWin.document.write(html);
printWin.document.close();
printWin.focus();
printWin.print();
printWin.close();html代码
<div id="chart_divInPT" class="chart">
<div id="chartContainerInPT" style="height: 300px; width: 100%;"></div>
</div>
<button class="btn save" type="button" style="float: right;" id="printInPT">Print</button> js
var chart = new CanvasJS.Chart(
"chartContainerInPT",
{
theme : "theme1",
title : {
text : ""
},
data : [ {
type : "column",
dataPoints : [
{
label : "Attempted",
y : chapterWiseResult['noOfAttempt']
},
{
label : "Correct",
y : chapterWiseResult['noOfCorrect']
},
{
label : "Wrong",
y : wrong
},
{
label : "Unattempted",
y : unattempted
},
]
} ]
});如何在浏览器中打印图表？
回答 2
Stack Overflow用户
发布于 2014-10-20 15:03:54
作为解决方案，您可以将画布保存为图像。
var image = canvas.toDataURL("image/png").replace("image/png", "image/octet-stream");
window.location.href=image;Stack Overflow用户
发布于 2021-02-22 05:52:59
更新2021年
Canvas.js图表现在添加了打印( pdf，png，jpg)格式功能。启用导出选项如下
title: {
text: "Alarm Statistics",
},
**exportEnabled: true**,// enable print option for the chart
data: [{...},{...}]
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
window.onload = function () {
var chart = new CanvasJS.Chart("chartContainer",
{
title: {
text: "Chart with export feature enabled",
},
exportEnabled: true,
axisX:{
minimum: -900,
interval: 100,
},
data: [
{
type: "area",
fillOpacity: .4,
lineThickness: 3,
dataPoints: [
{ x: -100, y: 71 },
{ x: -200, y: 55 },
{ x: -300, y: 50 },
{ x: -400, y: 65 },
{ x: -500, y: 105, markerType: "circle", markerSize: 9, markerColor: "brown", indexLabel: "Highest" },
{ x: -600, y: 68 },
{ x: -700, y: 28 },
{ x: -800, y: 34 },
{ x: -900, y: 14}
]
}
]
});
chart.render();
}
</script>
<script type="text/javascript" src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
</head>
<body>
<div id="chartContainer" style="height: 300px; width: 100%;">
</div>
</body>
</html>
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/26468695
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