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I want to draw a line chart with Chart.js, I followed the 'Getting started' section of Chart.js but I still am not able to draw even the example chart. What is wrong with my code? According to NetBeans it's all ok ..
Here's the code:
<!doctype html>
<html lang="nl">
<head>
<meta charset="utf-8">
<title>Become a member</title>
<script type="text/javascript" src="Chart.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript">
window.onLoad = function() {
init();
};
function init() {
var ctx = $("#myChart").get(0).getContext("2d");
var myNewChart = new Chart(ctx).Line(data, options);
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
fillColor: "rgba(220,220,220,0.5)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
data: [65, 59, 90, 81, 56, 55, 40]
},
{
fillColor: "rgba(151,187,205,0.5)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
data: [28, 48, 40, 19, 96, 27, 100]
}
]
}
}
</script>
<div>
<section>
<article>
<canvas id="myChart" width="400" height="400">
</canvas>
</article>
</section>
</div>
</body>
</html>
Any help is more than welcome!
Link to the plug-in -> http://www.chartjs.org/docs/
Kind regards
Glenn
568
It's been I while since you asked this question. I hope you have found the answer. If not, I am attaching a sample code to generate a simple "Line chart" using Chart.js. If you run this code snippet you will get a line chart.
If any body else fumbled on getting this working, it might help them too. My reference point was chart.js offical page.
This the line where I give the path to Chart.js:
I hope this helps!
Thanks, Kay
<!DOCTYPE HTML>
<html>
<head></head>
<body>
<canvas id="c" width="500" height="500"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.min.js"></script>
<script>
var ctx = document.getElementById("c").getContext("2d");
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [{
label: "My First dataset",
fillColor: "rgba(220,220,220,0.2)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(220,220,220,1)",
data: [65, 59, 80, 81, 56, 55, 40]
}, {
label: "My Second dataset",
fillColor: "rgba(151,187,205,0.2)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
data: [28, 48, 40, 19, 86, 27, 90]
}]
};
var MyNewChart = new Chart(ctx).Line(data);
</script>
</body>
</html>You need to place this line:
var myNewChart = new Chart(ctx).Line(data, options);
Beneath your declaration. Additionally, you're not defining your options so you need to also remove that from the call.
Completed, it should look like:
<!doctype html>
<html lang="nl">
<head>
<meta charset="utf-8">
<title>Become a member</title>
<script type="text/javascript" src="Chart.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript">
window.onload = function() {
init();
};
function init() {
var ctx = $("#myChart").get(0).getContext("2d");
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
fillColor: "rgba(220,220,220,0.5)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
data: [65, 59, 90, 81, 56, 55, 40]
},
{
fillColor: "rgba(151,187,205,0.5)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
data: [28, 48, 40, 19, 96, 27, 100]
}
]
}
var myNewChart = new Chart(ctx).Line(data);
}
</script>
<div>
<section>
<article>
<canvas id="myChart" width="400" height="400">
</canvas>
</article>
</section>
</div>
</body>
</html>
According to the new version of chartjs, version 2.8.0.
official documentation
This is a working code example
<!DOCTYPE HTML>
<html>
<body>
<canvas id="myChart"></canvas>
<script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
<script>
var ctx = document.getElementById('myChart').getContext('2d');
var chart = new Chart(ctx, {
// The type of chart we want to create
type: 'line',
// The data for our dataset
data: {
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
datasets: [{
label: 'My First dataset',
backgroundColor: 'rgb(255, 99, 132)',
borderColor: 'rgb(255, 99, 132)',
data: [0, 10, 5, 2, 20, 30, 45]
}]
},
// Configuration options go here
options: {}
});
</script>
</body>
</html>
var ctx = document.getElementById('myChart').getContext('2d');
var chart = new Chart(ctx, {
// The type of chart we want to create
type: 'line',
// The data for our dataset
data: {
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
datasets: [{
label: 'My First dataset',
backgroundColor: 'rgb(255, 99, 132)',
borderColor: 'rgb(255, 99, 132)',
data: [0, 10, 5, 2, 20, 30, 45]
}]
},
// Configuration options go here
options: {}
});<script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
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