Skip to content

Instantly share code, notes, and snippets.

@sedouard

sedouard/canvas-chartjs.js

Created September 17, 2016 00:54
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save sedouard/d38cef864c66686bcbfa1d458710c67b to your computer and use it in GitHub Desktop.
Save sedouard/d38cef864c66686bcbfa1d458710c67b to your computer and use it in GitHub Desktop.
Download ZIP
Using Canvas.js in Node.js
Raw
canvas-chartjs.js
// Using the node canvas module
var fs = require('fs');
var jsdom = require("jsdom");
jsdom.defaultDocumentFeatures = {
FetchExternalResources: ["script"],
ProcessExternalResources: true
};
jsdom.env('<html><body><div id="chart-div" style="font-size:12; width:800px; height:800px;"><canvas id="myChart" width="400" height="400" style="width:400px;height:400px"></canvas>></div></body></html>',
['https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.2/Chart.js'],
function (err, window) {
global.window = window;
global.document = window.document;
// Comes from the Chart.js link above just like <script src="...
global.Chart = window.Chart;
var canvas = document.getElementById('myChart');
var ctx = canvas.getContext('2d');
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
responsive: false,
animation: false,
width: 400,
height: 400,
scales: {
yAxes: [{
ticks: {
beginAtZero:true
}
}]
}
}
});
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment