<!DOCTYPE HTML>
<html>
<head>
<script src="/jquery-1.8."></script>
</head>
<body>
<input type="hidden" value="" data-json='{"a":123,"b":456}' />
<script>
var node = $("#tst");
(("data-json"));
var data = ("json");
(data);
= 'hello';
var data1 = (("data-json"));
(data1);
('data===data1',data===data1);
var data2 = ("json");
(data2);
('data===data2',data===data2);
var data3 = (("data-json"));//This way the value is not affected by the cache
(data3);
</script>
</body>
</html>