export page as jpeg and return filename list as json

exportPageAsJpeg.jsx

(function(){

	var exportPageAsJpeg = function( myDocument, myPage, myFilePath ){
		app.jpegExportPreferences.pageString = myPage.name;
		myDocument.exportFile(ExportFormat.JPG, File(myFilePath), false);
	};
	
	//var basePath = '${basePath}';
	var basePath = Folder.desktop;
	var prefix   = 'foo-';
	var json = '';
	
	json = json + '{jpgFilePathList:[';
	
	var myDocument = app.activeDocument;
	
	for(var myPageCounter=0; myPageCounter<myDocument.pages.length; myPageCounter++){
		var myPage = myDocument.pages.item(myPageCounter);
		var myFilePath = basePath + '/' + prefix + myPageCounter + '.jpg';
		exportPageAsJpeg( myDocument, myPage, myFilePath );
	
		json = json + '"' + myFilePath + '",';
	}
	
	json = json + ']}';
	return json;
})();