CkPython

Eval JavaScript Returning String

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

import sys
import chilkat

success = False

#  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.
sbScript = chilkat.CkStringBuilder()
success = sbScript.LoadFile("js_eval_return_string.js","utf-8")
if (success == False):
    print(sbScript.lastErrorText())
    sys.exit()

js = chilkat.CkJs()
result = chilkat.CkJsonObject()

#  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 == False):
    print(js.lastErrorText())
    sys.exit()

result.put_EmitCompact(False)
print(result.emit())

#  Output:

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

JavaScript

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

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