Chartjs-Chart.js is not working on my Browser

You’re using an old version of chart.js

Replace your script tag with this and your sample works:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.js"></script>

I can’t get the SO snippets to work, but here’s a working fiddle: https://jsfiddle.net/xekp0mzz/