Node.js

Eval JavaScript Returning Int

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Demonstrates getting the completion value of a JavaScript that returns an integer. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var 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.
    var sbScript = new chilkat.StringBuilder();
    success = sbScript.LoadFile("js_eval_return_int.js","utf-8");
    if (success == false) {
        console.log(sbScript.LastErrorText);
        return;
    }

    var js = new chilkat.Js();
    var result = new chilkat.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) {
        console.log(sbScript.LastErrorText);
        return;
    }

    result.EmitCompact = false;
    console.log(result.Emit());

    //  Output:

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

}

chilkatExample();