iframe跨域-Js通信的一种方式

iframe外监听： window.addEventListener('message',function(e){         var data = e.data;         console.log(data.info);//some info         console.log(data.action);//dosomething                  var height = data.height;         if(height < 250){             height = 250;         }         var ifr = document.getElementById('iframeName').style.height = height + 'px';          }); iframe内发消息： window.parent.postMessage({height:$(document).height()}, '*'); window.parent.postMessage({action: 'dosomething', info: 'some info'},"*"); 

iframe内监听： window.addEventListener("message", function(e){     var data = e.data;     console.log(data.info);//some info     console.log(data.action);//dosomething    }); iframe外发消息： document.getElementById('iframeName').contentWindow.postMessage({action: 'dosomething', info: 'some info'},"*");