jsxgraph advice advice

[William Haynes]

Say I have created a jsxgraph board like this:

jsxgraph(
    500,500,
    [
        "l": ['line', [[0,1], [1,2]]],
        "p": ['glider', ['l'], [visible: false]],
    ]
)

How can I make the glider visible when the advice is shown?

Thanks,

Will

[Christian Lawson-Perfect]

You could add a bit of JavaScript to the question to wait for the 'adviceDisplayed' signal and then show the glider.

I've made an example at https://numbas.mathcentre.ac.uk/question/177184/jsxgraph-show-an-object-when-advice-is-displayed/.

I'm a bit wary of doing things like this though. Is there a reason not to repeat the diagram in the advice section, with all the elements displayed?

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