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jQueryでiframeと親window同士でイベントをtriggerする

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jQueryをつかってiframeの中へイベントをtriggerする、あるいは、iframeの中から親windowへイベントをtriggerするのにハマったのでシェアしておきます。

親ウィンドウでもiframe内でもjQueryが読み込まれてる前提です。

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
</head>
<body>
  <iframe src="/iframe/" name="myIframe" frameborder="0"></iframe>
</body>
</html>

親windowからiframeのdocumentへイベントをtriggerする

document.myIframe.$(document.myIframe.document).trigger('someCustomEvent');

ポイントは子フレームスコープのjQueryを使うところですね。$(document.myIframe.document).trigger(...)だと受け取れませんので注意してください。

逆も同じ要領です。
iframeから親windowのdocumentへイベントをtrigger。

parent.$(parent.document).trigger('someCustomEvent');

受けとる側は普通です。

$(document).on('someCustomEvent', function(e){

});
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