'Save As' to JPEG format (or to TIFF)

Question

The 'Save As' command produces 20 different file format options to choose from. When 'saving as' to the default PSD format, the selection is obviously quick and easy. However I mostly 'save as' to JPEG format or TIFF format and it is awkward to make the JPEG or TIFF format selections each time.
After doing 'Save As', I have been clicking on 'Format' and then typing 'j' or 'ti' to bring up JPEG or TIFF from the menu of 20 formats to speed up the selection a little bit as compared to scrolling through the Format menu.
But it would be much easier to have a script that could bring up a modified version of the "Save As" dialogue box so that 'Save As' to JPEG format or 'Save As' to TIFF format could be executed very efficiently and without having to wade through the clutter of the 17 other file formats in the Format menu which I hardly ever use.
I have done a fair amount of web searching, including on ps-scripts.com, but so far without finding a good solution to this. Any help would be much appreciated.
Of course I have thought of creating an Action (with assigned keyboard shortcut) which saves to JPEG and another Action which saves to TIFF. However, the saved file then always ends up in one location and with the same file name, therefore often requiring the additional steps of renaming and moving the file.
Batch processing of Actions (perhaps in conjunction with the Image Processor script) is perfect for batches, especially for large batches but I was hoping for something quick and easy for saving files individually.
Thanks!
Geoff
P.S. I also tried finding a way of disabling all the 'Save As' file formats which I never use so that the 'Save As' format choices would be very few (i.e. 3 or 4 instead of 20) but have had no success there.

Answer 1

It's been awhile since I played with the saveAs function.
Pretty sure you have to type the file name in the save dialog
Here is a function I created for work.
I removed a lot of code from it that doesn’t pertain to this topic but the code should work
This might help you with a little more understanding and show how you can hard code where to save without even bringing up a dialog box
saveAsPNG( filelocation + filename )// usage
function saveAsPNG( where ){
               var tmpFile = File(where + '.png' );
               var pngOpts = new ExportOptionsSaveForWeb;
                    pngOpts.format = SaveDocumentType.PNG
               //     pngOpts.PNG8 = true;
                    pngOpts.transparency = true;
               //     pngOpts.interlaced = false;
                    pngOpts.quality = 100;
               app.activeDocument.exportDocument(tmpFile,ExportType.SAVEFORWEB,pngOpts);
          return true;