How to export csv in CanvasJS in Javascript?
Question
I want to load a csv file to my html file to plot some data. I have figured out how to plot in html but the next challenge is to import data from a csv file. I am new to html and javascript and would appreciate inputs or even other modules aside from CanvasJS.
<!DOCTYPE HTML>
<html>
<head>
<meta charset ="UTF-8">
<script>
window.onload = function () {
var chart = new CanvasJS.Chart("chartContainer", {
animationEnabled: true,
theme: "light2",
title:{
text: "DOE TEST Chart"
},
axisY:{
includeZero: false
},
data: [{
type: "line",
dataPoints: dataPoints
}]
});
$.get("file:////C:/Users/TestDev/Documents/html_files/js_plots/Sample/zpw.csv", getDataPointsFromCSV);
function getDataPointsFromCSV(csv) {
var csvLines = points = [];
csvLines = csv.split(/[\r?\n]\r|\n]+/);
for (var i = 0; i < csvLines.length; i++) {
if (csvLines[i].length > 0){
points = csvLines[i].split(",");
dataPoints.push({
label: points[0],
y: parseFloat(points[1])
});
}
}
chart.render();
}
}
</script>
</head>
<body>
<div id="chartContainer" style="height: 370px; max-width: 920px; margin: 0px auto;"></div>
<script src="../../canvasjs.min.js"></script>
</body>
</html>
2 answers
solution1
0 2019-05-31 19:05:22
尝试将包含csv文件的Sample文件夹移动到项目中，并使用类似“Sample / zpw.csv”的相对URL
solution2
0 2019-06-03 04:42:14
Due to security issues browsers doesn't allow you to read files from local filesystem . However, you can save your CSV in Google-Sheets and export it as CSV and use the link to the CSV in $.get("Google-Sheet-CSV-URL") .
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