To show a Line Chart with two Y axis, @khertan made a pull request to add this feature >>

You can grab the modified Chart.js file here >>

You'll only need to add the option to your options variable:

var options = {
    scaleUse2Y: true,

And then instantiate a normal Line chart:

var chart = new Chart(ctx).Line(data, options);

Problem is that if you're using an extension like StackedBar, for example, it will probably break... That must be the reason why it hasn't been merged with master's branch of Chart.js yet. Patience for the 2.0 version release.

Related Query

More Query from same tag