Chilkat2-Python

Eval JavaScript Returning Int

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Demonstrates getting the completion value of a JavaScript that returns an integer. Chilkat2-Python

import sys
import chilkat2

success = False

# This example demonstrates getting the completion value of a script,
# where the last evaluated expression is an integer.

# The Javascript run in this example is shown below.

# Load the JavaScript from a file.
sbScript = chilkat2.StringBuilder()
success = sbScript.LoadFile("js_eval_return_int.js","utf-8")
if (success == False):
    print(sbScript.LastErrorText)
    sys.exit()

js = chilkat2.Js()
result = chilkat2.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 an int.
success = js.Eval(sbScript,result)
if (success == False):
    print(sbScript.LastErrorText)
    sys.exit()

result.EmitCompact = False
print(result.Emit())

# Output:

# {
#   "type": "int",
#   "value": 42
# }