How to implement recaptcha by placing script only

i not know much more but i know that in a application i use recaptcha and make them work by placing a javascript only.

are you know 开发者_Python百科that how Recaptcha work by placing javascript only on webpage.

<script type="text/javascript" src="http://www.google.com/recaptcha/api/js/recaptcha_ajax.js"></script> <script language="javascript" type="text/javascript"> Recaptcha.create("6Ld70wQAAAAAAKqf1MVuaDXWluR2MQblCQGgiKlf", "recaptcha", { theme: "red", callback: Recaptcha.focus_response_field } ); </script>enter code here

i use this script but not found that's work. how i can do that.

You need your own API key, which can be created here.

Without a valid API key, it will not work.