js designMode 属性变化 自定义通知
js代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <button onclick="modify()"> modify designMode</button> <button onclick="register()"> manual register event</button> <iframe id="nihao"> </iframe> <script> var iframe = document.querySelector("#nihao"); //这里注册没有用。因为后面执行了 document.close() window.addEventListener('cust_event_notify_attr_changed', function (event) { console.log("=== cust_event_notify_attr_changed from top window ==="); }, false); iframe.contentWindow.addEventListener('click', function (event) { console.log("=== onclick iframe click from top window==="); }, false); iframe.contentWindow.document.open(); iframe.contentWindow.document.write("<!DOCTYPE html> <html><body><h3>nihao</h3></body></html>"); iframe.contentWindow.document.close(); //这里注册才有用。 console.log("== register cust_event_notify_attr_changed =="); iframe.contentWindow.addEventListener('cust_event_notify_attr_changed', function (event) { console.log("=== cust_event_notify_attr_changed from iframe==="); }, false); iframe.contentWindow.addEventListener('click', function (event) { console.log("=== onclick iframe click from iframe==="); }, false); iframe.contentWindow.document.designMode = "on"; function modify() { document.querySelector("#nihao").contentWindow.document.designMode = "off"; } function register() { var iframe = document.querySelector("#nihao"); iframe.contentWindow.addEventListener('cust_event_notify_attr_changed', function (event) { console.log("=== cust_event_notify_attr_changed from iframe again==="); }, false); iframe.contentWindow.addEventListener('click', function (event) { console.log("=== onclick iframe click==="); }, false); } </script> </body> </html>