Uncaught TypeError: Cannot read property 'offsetWidth' of undefined - chart.js
Solution 1
After revisiting the question, here's your problem: you are using the wrong version of chart.js
. According to this section, if you want to use an axis that's time based, you either need to explicitly include moment.js
, or use the bundle version.
Changing the resource in your jsfiddle to https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.4/Chart.bundle.min.js
will show the expected chart. No need to change the code at all.
Solution 2
If you want to use Chart.js v2.0 then this CDN will work.
https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.1.3/Chart.bundle.min.js
Solution 3
Use this : var ctx = document.getElementById("myChart").getContext("2d");
Instead of : var ctx = document.getElementById("myChart");
Solution 4
You have to use the version 2 of chart.js
. If you are using npm, in your package.json
, update chart.js e.g., "chart.js": "^2.1.1",
. In case you use react-chartjs-2, you will still need to make sure that your chart.js version is 2 or bigger.
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ohadinho
Updated on June 26, 2022Comments
-
ohadinho almost 2 years
I have this simple html:
<canvas id="myChart" width="400" height="400"></canvas>
and this js:
var ctx = document.getElementById("myChart"); 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: { scales: { yAxes: [{ ticks: { beginAtZero: true } }] } } });
Even though the canvas is configured with
myChart
id, I get the following error:Uncaught TypeError: Cannot read property 'offsetWidth' of undefined
JSFiddle: https://jsfiddle.net/kroejrhx/