Go

Eval JavaScript Returning Int

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

    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.
    sbScript := chilkat.NewStringBuilder()
    success = sbScript.LoadFile("js_eval_return_int.js","utf-8")
    if success == false {
        fmt.Println(sbScript.LastErrorText())
        sbScript.DisposeStringBuilder()
        return
    }

    js := chilkat.NewJs()
    result := chilkat.NewJsonObject()

    // 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 {
        fmt.Println(sbScript.LastErrorText())
        sbScript.DisposeStringBuilder()
        js.DisposeJs()
        result.DisposeJsonObject()
        return
    }

    result.SetEmitCompact(false)
    fmt.Println(*result.Emit())

    // Output:

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

    sbScript.DisposeStringBuilder()
    js.DisposeJs()
    result.DisposeJsonObject()