chromium/src/third_party/blink/web_tests/external/wpt/html/infrastructure/safe-passing-of-structured-data/resources/echo-iframe.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <meta charset="utf-8">
 <title>A test page that echos back anything postMessaged to it to its parent</title>

 <script>
 "use strict";

 window.onmessage = ({ data }) => {
   parent.postMessage(data, "*");
 };
 </script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title>A test page that echos back anything postMessaged to it to its parent</title>

	<script>
	"use strict";

	window.onmessage = ({ data }) => {
	parent.postMessage(data, "*");
	};
	</script>