iframe-resizable-arraybuffer-helper.html (286B)
1 <!DOCTYPE html> 2 <script> 3 4 window.addEventListener('message', (e) => { 5 const buffer = e.data; 6 e.source.postMessage(`byteLength=${buffer.byteLength},maxByteLength=${buffer.maxByteLength},resizable=${buffer.resizable}`, '*'); 7 }); 8 9 window.parent.postMessage('started', '*'); 10 11 </script>