Reply To: using drop down how to change charts using user input value

[Manoj Mohan]

@gowri,

There are couple of issue with the code that you have shared.

1. You need to replace chartType with chart in chartType.options.data[0].type as chartType is referred to dropdown field not the chart object.
chart.options.data[0].type = chartType.options[chartType.selectedIndex].value;

2. Below code has to be inside the window.onload function as chart is inside window.onload scope.

var chartType = document.getElementById("chartType");
        chartType.addEventListener( "change", function(){
        chart.options.data[0].type = chartType.options[chartType.selectedIndex].value;
        chart.render();
});

Please take a look at this JSFiddle for the complete code.

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Manoj Mohan
Team CanvasJS