Classic ASP

Eval JavaScript Returning String

Demonstrates getting the completion value of a JavaScript that returns a string.

Chilkat Classic ASP Downloads

Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

'  This example demonstrates getting the completion value of a script,
'  where the last evaluated expression is a string.

'  The Javascript run in this example is shown below.

'  Load the JavaScript from a file.
set sbScript = Server.CreateObject("Chilkat.StringBuilder")
success = sbScript.LoadFile("js_eval_return_string.js","utf-8")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( sbScript.LastErrorText) & "</pre>"
    Response.End
End If

set js = Server.CreateObject("Chilkat.Js")
set result = Server.CreateObject("Chilkat.JsonObject")

'  Run the JavaScript
'  Eval returns the completion value of the script. This is generally the value of the last evaluated expression.
'  In this case, the last evaluated expression is a string.
success = js.Eval(sbScript,result)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( js.LastErrorText) & "</pre>"
    Response.End
End If

result.EmitCompact = 0
Response.Write "<pre>" & Server.HTMLEncode( result.Emit()) & "</pre>"

'  Output:

'  {
'    "type": "string",
'    "value": "Ready for Chilkat.Js"
'  }

%>
</body>
</html>

JavaScript

var status = "Ready";
var system = "Chilkat.Js";

// The last statement is an expression
status + " for " + system;