Misha_White,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(function() {
var obj = {a : 10, b : "test"};
var param = JSON.stringify(obj);
$("#box").attr("data-param", param);
alert($("body").html());
alert($("#box").data("param").b);
});
</script>
</head>
<body>
<div id="box" ></div>
</body>
</html>