Swift

Eval JavaScript Returning Int

See more JavaScript Examples

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

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

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

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

    result.emitCompact = false
    print("\(result.emit()!)")

    // Output:

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

}