php - Watch directory for new files with javascript

I have a function called loadDATA that loads the file data.json from the server in the same directory where the js file is. I now need to watch that directory for new a new .json file that will appear every 5 minutes, grab the name and replace the initial data.json URL that is passed to the new .json filename which I will not know unfortunately.

I've been looking at js to do this but keep seeing php responses. Is it possible with js and just a pain in the ars. I'm not against using php, it's just been awhile and if I remember a little more intuitive. I did see something called node.js but it's not clear to me if it is compatible with IE as well. I open to all suggestions on approaching this. Thank you for the help.

    jsonURL = "data.json";

    function loadDATA() {
      $.getJSON(jsonURL, function(json) {
//Do some stuff

    }
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