How can I enable CORS in FastAPI?

you can find answer from this:fastapi cors

then this is a very simple code to achieve it:

1. create a python file and named it main.py.

2. add code in this file.

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

app = FastAPI()

origins = ["*"]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.get("/")
async def main():
    return {"message": "Hello World"}

and run this app:

uvicorn main:app  --reload --host 0.0.0.0 --port 8000

if you computer ip is 192.12.12.12

you can check this link and just write a small javascript in html:

<script>
        fetch("http://192.12.12.12:8000/").then((Response) => {
            return Response.json()
        }).then((data) => {
            console.log(data);
        })
    </script>