[m11a]

Stripe.js creates an iframe hosted by Stripe which sends the card information directly to Stripe. The merchant cannot see or intercept that card info, during or after transmission, and thus cannot send it to another processor (at least not using the same payment card input boxes).

[cj]

Ah yes, Stripe.js v3 works the way you described.

I was thinking of Stripe.js v2 which doesn’t require an iframe / supports custom payment forms.