<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
$(function ()
{
var s = $('input[data-send]').data('send');
alert(s.param)
})
</script>
</head>
<body>
<input type="text" name="url" data-send='{"url":"124","method":"POST","param":"44214"}'>
</body>
</html>