Zoom in other versions

[Harrix]

I copied the library from Github. When I opened examples\vector.html I can zoom chart with the middle mouse button. This example uses the version 0.92/jsxgraphcore.js
In all other exaples, I can not zoom the charts. And if I change jsxgraphcore.js in vector.html on version 0.97 zoom stops working. How fix it?

[migerh]

The zoom can be configured with several board attributes:

https://github.com/jsxgraph/jsxgraph/blob/master/src/options.js#L78

You need to set zoom.wheel to true. I updated the vector.html as an example:

5d7943e

[Harrix]

Thank you!