Code - TypeScript

Copy the values from Range A1:A2 on the active worksheet to B1:B2.
Assign the previously loaded values to the new range proxy object.
The values will be updated once the following .then() function is invoked.

Excel.run(function (context) { 
    var _range = context.workbook.worksheets.getActiveWorksheet().getRange("A1:A2"); 
    _range.load ("address, values, range/format"); 
    _return context.sync().then(function() { 
        context.workbook.worksheets.getActiveWorksheet().getRange("B1:B2").values= range.values; 
    }); 
}).then(function() { 
      console.log("done"); 
}).catch(function(error) { 
        console.log("Error: " + error); 
        if (error instanceof OfficeExtension.Error) { 
            console.log("Debug info: " + JSON.stringify(error.debugInfo)); 
        } 
}); 

Excel.run(function (context) { 
    var _sheetName = "Sheet1"; 
    var _rangeAddress = "A1:B2"; 
    var _myRange = context.workbook.worksheets.getItem(_sheetName).getRange(_rangeAddress); 
    _myRange.load(["address", "format/*", "format/fill", "entireRow" ]); 
    return context.sync().then(function() { 
        console.log (myRange.address); 
        console.log (myRange.format.wrapText); 
        console.log (myRange.format.fill.color); 
        //console.log (myRange.format.font.color); //not loaded 
    }); 
}).then(function() { 
      console.log("done"); 
}).catch(function(error) { 
        console.log("Error: " + error); 
        if (error instanceof OfficeExtension.Error) { 
            console.log("Debug info: " + JSON.stringify(error.debugInfo)); 
        } 
});