custom-validator-events example is broken

[markgibbons25]

What kind of issue is this? (put 'x' between the square brackets)

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Example is broken on both http://parsleyjs.org/doc/examples/custom-validator-events.html and the code pen link on that page

[marcandre]

Oh, indeed. I'll fix it up to be more instructive.

[marcandre]

FWIW, this was broken because of #1151