IE8 and earlier broken due to indexOf issue

[impelsystems]

The line:
return a.ua?0<=U(a.ua,5).indexOf("JS_THIRDEYE"):!1

Fails in IE8 and earlier with the error:
Object doesn't support property or method 'indexOf'

Adding in the usual indexOf polyfill does not fix the issue, maybe this is something handled internally.

Lots of reports of errors over the last 10 days or so on google groups about it.

[impelsystems]

I understand this is a PHP example, however maybe you can get in touch with the API devs, seems many having the same issue

https://groups.google.com/forum/#!topic/recaptcha/OCZ9LVfOdlo

[colecmc]

I'm having this issue and would love to know a work around for my IE8 users.

[impelsystems]

@colecmc I ended up implementing reCaptcha v1 for <=IE8, and leaving v2 for others

[rowan-m]

Closing super old issues. Please re-raise if still relevant.