Originally Posted by ebrunn
Can somebody explain what the one means?
It means that the total memory size in javascript (like objects/variables/etc) is limited to 10MB, which is pretty large. The 5 seconds means that each javascript execution will be killed if it takes more then 5 seconds.
The one problem that I see, depends how this is implemented.
So in AJAX, you have to fetch some new data from the server. The way that is stated, if that fetch were to take longer then 5 seconds (including whatever needs to be done with the fetch data), which is very easy to do, esp over edge, the process could be killed. I would assume they thought that out a little better than that, but like everything else about the iPhone, we need more info from the horses mouth.