CkPython

JavaScript console

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Demonstrates console output using Chilkat JavaScript. CkPython

import sys
import chilkat

success = False

# This example demonstrates using the built-in console object.
# The Javascript run in this example is shown below.

# Load the JavaScript from a file.
sbScript = chilkat.CkStringBuilder()
success = sbScript.LoadFile("qa_data/js_tests/test_console.js","utf-8")
if (success == False):
    print(sbScript.lastErrorText())
    sys.exit()

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

# Run the JavaScript
# Results (not console output) go to result.
# Note: 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 console.log which does not calculate a value. Therefore, it returns undefined.
success = js.Eval(sbScript,result)
if (success == False):
    print(sbScript.lastErrorText())
    sys.exit()

# We can look at the result, which is "undefined", which is normal and expected.
print(result.emit())
# The result JSON is: {"type":"undefined","value":"undefined"}

# The console output is retrieved by calling ConsoleOutputSb
sbOut = chilkat.CkStringBuilder()
js.ConsoleOutputSb(sbOut)
print(sbOut.getAsString())