Lianja

JavaScript console

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Demonstrates console output using Chilkat JavaScript. Lianja

llSuccess = .F.

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

// Load the JavaScript from a file.
loSbScript = createobject("CkStringBuilder")
llSuccess = loSbScript.LoadFile("qa_data/js_tests/test_console.js","utf-8")
if (llSuccess = .F.) then
    ? loSbScript.LastErrorText
    release loSbScript
    return
endif

loJs = createobject("CkJs")
loResult = createobject("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.
llSuccess = loJs.Eval(loSbScript,loResult)
if (llSuccess = .F.) then
    ? loSbScript.LastErrorText
    release loSbScript
    release loJs
    release loResult
    return
endif

// We can look at the result, which is "undefined", which is normal and expected.
? loResult.Emit()
// The result JSON is: {"type":"undefined","value":"undefined"}

// The console output is retrieved by calling ConsoleOutputSb
loSbOut = createobject("CkStringBuilder")
loJs.ConsoleOutputSb(loSbOut)
? loSbOut.GetAsString()


release loSbScript
release loJs
release loResult
release loSbOut