JavaScript

Eval JavaScript Returning String

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

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

var js = new CkJs();
var result = new CkJsonObject();

//  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) {
    console.log(js.LastErrorText);
    return;
}

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

//  Output:

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

JavaScript

var status = "Ready";
var system = "Chilkat.Js";

// The last statement is an expression
status + " for " + system;