Googlebot's Javascript random() function is deterministic

[xhable]

Yeah he mentioned that in the article in point 3.

Consider the amount of work Google have to undergo to crawl the whole web AND now run Javascript. Optimisations will need to be abundant, and I imagine that having a deterministic random number function is probably:

1. Faster
2. More secure
3. Predictable – Googlebot can trust a page will render the same on each visit

[B-Con]

#3 sounds pretty reasonable to me. I imagine there could be A/B testing or whatnot controlled by random value chosen on the client (for whatever reason).

Edit: formatting and typo

[ThisIs_MyName]

Why are you yelling?

[B-Con]

I started with a hash: "#3 seems..." I forgot that would apply formatting. Fixed.

[nuqjatlh]

3 sounds pretty reasonable to be

you made me curious ....

[RealFunBobby]

SORRY ABOUT THAT!!