Exporting to JPEG

Hi all ,

I am using following code to convert AI file to JPEG

exportFileToJPEG('~/Desktop/Harsh/1.jpg');
 
function exportFileToJPEG (dest) {
if ( app.documents.length > 0 ) {
var exportOptions = new ExportOptionsJPEG();
var type = ExportType.JPEG;
var fileSpec = new File(dest);
exportOptions.antiAliasing = false;
exportOptions.qualitySetting = 70;
app.activeDocument.exportFile( fileSpec, type, exportOptions );
}
}

but ir crope the document to the size of the image and resize the ArtBoard to the size of Image.

I want to convert the Existing ArtBoard Area only , i dont want to crope the image.

Please help me out.

Thanks

Harsh S