CORS errors wasted hours of my time until I finally…
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CORS errors wasted hours of my time until I finally understood whats actually happening
I used to think CORS was just some annoying backend issue.
Every time I saw: “blocked by CORS policy”
I’d just:
* add origin: "\*"
* or disable it somehow
It worked… until it didn’t.
Recently ran into a case where:
* API worked in Postman
* Failed in browser
* Broke again when cookies were involved
Turns out I completely misunderstood how CORS actually works (especially preflight + credentials).
**Big realization:**
>CORS isn’t the problem — it’s the browser trying to protect users.
Do you whitelist origins manually or use some dynamic approach?
#js #dev #programming #technology
source
I used to think CORS was just some annoying backend issue.
Every time I saw: “blocked by CORS policy”
I’d just:
* add origin: "\*"
* or disable it somehow
It worked… until it didn’t.
Recently ran into a case where:
* API worked in Postman
* Failed in browser
* Broke again when cookies were involved
Turns out I completely misunderstood how CORS actually works (especially preflight + credentials).
**Big realization:**
>CORS isn’t the problem — it’s the browser trying to protect users.
Do you whitelist origins manually or use some dynamic approach?
#js #dev #programming #technology
source
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