Javascript Html5 - 跨浏览器 Iframe postmessage - 子级到父级？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/8822907/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Html5 - Cross Browser Iframe postmessage - child to parent?
提问by Dancer
I've been following this tutorial - http://www.youtube.com/watch?v=R2hOvZ7bwXU, which basically explains how to use postmessage to securely pass a message between iframe and parent - you basically end up with something like this - http://html5demos.com/postmessage2
我一直在关注本教程 - http://www.youtube.com/watch?v=R2hOvZ7bwXU，它基本上解释了如何使用 postmessage 在 iframe 和父级之间安全地传递消息 - 你基本上最终会得到这样的东西 - http://html5demos.com/postmessage2
My problem is that I need it to work the opposite way round (child to parent) and dont know how to target the parent window.
我的问题是我需要它以相反的方式工作（子到父）并且不知道如何定位父窗口。
this is my receiver code (in the parent) -
这是我的接收器代码（在父级中）-
function handlingMsg(e)
{alert("works")
if(e.origin == "http://uc.dialogue.net")
{
var blah = e.data;
alert(blah);
}
else{alert("error");}
}
addEventListener("message",handlingMsg, true);
and this is the sender function that is triggered by a simple form (in child) -
这是由一个简单的表单（在子表单中）触发的发送器函数 -
var text=$('.srchInput').val();
window.parent.postMessage(text, "http://uc.dialogue.net");
Should I be targeting the parent in a different way?
我应该以不同的方式定位父母吗？
Cheers Paul
干杯保罗
回答by Dancer
var eventMethod = window.addEventListener ? "addEventListener" : "attachEvent";
var eventer = window[eventMethod];
var messageEvent = eventMethod == "attachEvent" ? "onmessage" : "message";
// Listen to message from child window
eventer(messageEvent,function(e) {
var key = e.message ? "message" : "data";
var data = e[key];
//run function//
},false);
Got it to work with the above in the parent page and the following in the child page - ???
让它与父页面中的上述内容和子页面中的以下内容一起使用 - ???
parent.postMessage("loadMyOrders","*"); // `*` on any domain
Code copied from here.
从这里复制的代码。
回答by Avindra Goolcharan
A modern, simplified version of the accepted answer (which drops legacy ie8 support in favor of terseness):
已接受答案的现代简化版本（放弃对传统 ie8 的支持以支持简洁）：
window.addEventListener('message',function(e) {
var key = e.message ? 'message' : 'data';
var data = e[key];
//run function//
},false);
Please see:
请参见：
