How do I fix CORS policy errors when connecting my React frontend to a local Express backend during my portfolio project development
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
How do I fix CORS policy errors when connecting my React frontend to a local Express backend during my portfolio project development
2 real searches · 1 real-search pass
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (2)
Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT2 real searches · gpt-6
Express cors middleware official documentation origin options credentials preflight Google ↗
Vite server proxy official documentation Google ↗
- cors middleware · expressjs.com
- Cross-Origin Resource Sharing (CORS) - HTTP · developer.mozilla.org
- CORS errors - HTTP · developer.mozilla.org
Queries
2 queries · click a column to sort