frameborder 属性规定是否显示框架周围的边框。
<!DOCTYPE html> <html> <body> <iframe id="myframe" src="/default.asp" frameborder="0"> <p>Your browser does not support iframes.</p> </iframe> <p>The frameborder is set to: <script> document.write(document.getElementById("myframe").frameBorder); </script> <p> </body> </html>