<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
</head>
<body>
<div
class="data"
style="display: none;"
data-dc-news-feed-preview-options='{"cards": "latest from the open", "content": "Watson vs Nicklaus in Golf's most memorable playoff"}'></div>
</body>
<script>
var data = document.querySelector(".data").dataset.dcNewsFeedPreviewOptions;
data = JSON.parse(data);
alert(data.content);
</script>
</html>