Discussion on the numerical limit of the ol element in the html document

Generally speaking, it is unlikely that you will encounter extremely large <ol> lists in HTML documents, and this article is purely a technical discussion.

I happened to come across this problem and tested it.

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

There are slight differences between browsers.

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

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

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

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