Discussion on the numerical limit of the serial number of the ol element in the html document_HTML/Xhtml_Web page production

Generally speaking, it is unlikely to encounter a huge

list in an HTML document. This article is just a purely technical discussion.

I happened to encounter this problem and tested it.

The measured limit is [-2147483648, 2147483647], which is [ - 2^31 ~ 2^31 - 1 ]

Browser specifics are slightly different.

On IE10 and Firefox, after the serial number reaches the positive limit value of 2147483647, the serial numbers of subsequent list items are all the same as the positive limit value of 2147483647 and remain unchanged.

2147483645. a
2147483646. b
2147483647. c
2147483647. d
2147483647. e
2147483647. f

On Chrome, after the serial number reaches the extreme positive value 2147483647, the next serial number will become the extreme negative value -2147483648, and subsequent ones will increase on this basis -2147483647, -2147483646,...

2147483645. a
2147483646. b
2147483647. c
-2147483648. d
-2147483647. e
-2147483646. f