[chncdcksn]

I may be wrong, but I don't think JavaScripts from a CDN can access the same localStorage as some JavaScript from another origin. (Source: "Cross-origin data storage access" https://developer.mozilla.org/en-US/docs/Web/Security/Same-o...)

[tprynn]

You are wrong. The 'origin' of a script is the domain which loads it, not the domain where it is hosted. (Those can be the same, though.)

[chncdcksn]

TIL. Thanks!