Classic ASP

JSON Escape and Unescape a String

Demonstrates how to JSON escape or unescape a string. Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
set sb = Server.CreateObject("Chilkat.StringBuilder")

success = sb.Append("backslash: \\, A: \u0041")
Response.Write "<pre>" & Server.HTMLEncode( sb.GetAsString()) & "</pre>"

'  The output is:
'     backslash: \\, A: \u0041

'  The keyword "json" can be used
'  to escape and unescape.  To escape is to encode.  To unescape is to decode.

'  Unescape (decode) the string in sb.
success = sb.Decode("json","utf-8")
Response.Write "<pre>" & Server.HTMLEncode( sb.GetAsString()) & "</pre>"

'  After JSON unescaping:
'     backslash: \, A: A

'  Now JSON escape the string.
success = sb.Encode("json","utf-8")
Response.Write "<pre>" & Server.HTMLEncode( sb.GetAsString()) & "</pre>"

'  After JSON escaping:
'     backslash: \\, A: A

'  Note: The "A" is not escaped to "\u0041" because there is no need.
'  The "\uXXXX" format would be produced for non-printable control chars.

%>
</body>
</html>