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<html>
<head>
<title>reCAPTCHA demo: Explicit render after an onload callback</title>
<script>
var onSubmit = function(token) {
console.log('success!');
};
var onloadCallback = function() {
grecaptcha.render('submit', {
'sitekey' : '6LcgQsoUAAAAAOhinbS6iEKagw8UryMwXPuNbas3',
'callback' : onSubmit
});
};
</script>
</head>
<body>
<form action="?" method="POST">
<input id='submit' type="submit" value="Submit">
</form>
<script src="https://www.google.com/recaptcha/api.js?onload=onloadCallback&render=explicit" async defer></script>
</body>
</html>
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