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Making reCaptcha v2 asynchronouns

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PageSpeed is telling that I have to defer parse some javascript from reCaptcha code calling https://www.gstatic.com/recaptcha/api2/r20150624112436/recaptcha__en.js.

I found the code on the prestashop module which is:

	public function hookHeader()
		return '<script src="https://www.google.com/recaptcha/api.js"></script>';

I tried to add "async defer" inside the script tag, but it didn't work. Anyone knows how to load it asynchronously?


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Note that adding "async defer" in the script tag works now on V1.7.3.3, at least on my end.

Edited by Alexenn (see edit history)

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