jQuery Stacked Bar 100% Chart Example

Once the chart has been rendered, you can get a reference to it by calling CanvasJSChart method on the DOM element without passing any parameter as shown below. Once you have the reference you can update the chart by changing its options.

var chart = $(".chartContainer").CanvasJSChart(); 

chart.options.title.text += ": Updated";

chart.render();

Please look into the reference section for all the supported options.