This demo is interesting because as well as employing the traditional adjustable
feature it also uses a custom event listener in order to add mouse wheel support. This means
that you can also use your mouse wheel to control the value of the Fuel gauge.
<script src="RGraph.common.core.js"></script> <script src="RGraph.fuel.js"></script>Put this where you want the chart to show up:
<canvas id="cvs" width="200" height="200">[No canvas support]</canvas>This is the code that generates the chart: