How can I insert specified text at the current cursor position using a script in Illustrator?

There are very good text expander applications for both Mac and Windows OS (e.g. aText or Beeftext). Mac OS even has a built-in snippet tool.

Probably more convenient than a script.

Hi @Aprking, I don't know the answer to the first question. I don't think we have access to mouse events via scripting. It may be possible via an elaborate (and hacky) use of Script UI, but I wouldn't get my hopes up. I think you'll need SDK for that one.

As for the second question, you can do something like this:

(function () {

    var myContents = 'Replacement Text';

    var doc = app.activeDocument,
        item = doc.selection;

    if ('TextRange' !== item.constructor.name)
        return alert('Please select some text and try again.');

    item.contents = myContents;
    item.select(true);

})();

- Mark