C++

Eval JavaScript Returning String

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

#include <CkStringBuilder.h>
#include <CkJs.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    bool 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.
    CkStringBuilder sbScript;
    success = sbScript.LoadFile("js_eval_return_string.js","utf-8");
    if (success == false) {
        std::cout << sbScript.lastErrorText() << "\r\n";
        return;
    }

    CkJs js;
    CkJsonObject result;

    //  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) {
        std::cout << js.lastErrorText() << "\r\n";
        return;
    }

    result.put_EmitCompact(false);
    std::cout << result.emit() << "\r\n";

    //  Output:

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