Swift

JavaScript console

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Demonstrates console output using Chilkat JavaScript. Swift

func chilkatTest() {
    var success: Bool = 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.
    let sbScript = CkoStringBuilder()!
    success = sbScript.loadFile(path: "qa_data/js_tests/test_console.js", charset: "utf-8")
    if success == false {
        print("\(sbScript.lastErrorText!)")
        return
    }

    let js = CkoJs()!
    let result = CkoJsonObject()!

    // 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(jscript: sbScript, result: result)
    if success == false {
        print("\(sbScript.lastErrorText!)")
        return
    }

    // 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
    let sbOut = CkoStringBuilder()!
    js.consoleOutputSb(sb: sbOut)
    print("\(sbOut.getAsString()!)")

}