form-poster.html (361B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"/> 3 <meta name="referrer" content="origin"> 4 <form method="POST" id="form"></form> 5 <script> 6 function onLoad() { 7 const params = new URLSearchParams(self.location.search); 8 const form = document.getElementById('form'); 9 form.action = params.get('target'); 10 form.submit(); 11 } 12 self.addEventListener('load', onLoad); 13 </script>