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No, not a PHP array, a JavaScript array. When you first call the ajax, add each item to a JavaScript array. Then, every time you update, check to see if the item is already in the JavaScript array....

If you only want to add the items that change in the database, then you are going to have to make an array of all items. Then, just check the array. If the item exists in the array, skip it. If it...

First off, AJAX is an implementation, not a language known as Asynchronous JavaScript and XML. So, this would be a JavaScript solution.

There are tons of examples of this here at CodeGuru and...