<script type="text/javascript">
document.getElementById('login-btn').onclick = () =>
FB.login(response => {}, {
config_id: '<CONFIGURATION_ID>',
response_type: 'code',
override_default_response_type: true,
extras: {
setup: {
solutionID: '<SOLUTION_ID>' // Solution ID goes here
}
}
});
</script>
<button id="login-btn" style="background-color:green; padding:10px 20px; color:#fff;">
Launch Embedded Signup
</button>