react

react 遍历

res.data.map(
  (item, index)=>{
    item.key = index;
    return item;
  }
);

antd table

const columns
const dataSource
const rowSelection

CROS

Access to XMLHttpRequest at 'http://127.0.0.1:8000/api/imooc/order/' from origin 'http://127.0.0.1:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Origin: http://127.0.0.1:3000

pip install django djangorestframework django-cors-headers

INSTALLED_APPS = [
    ...
    'corsheaders',
    ...
]

MIDDLEWARE = [
...
    'corsheaders.middleware.CorsMiddleware'
]


CORS_ORIGIN_ALLOW_ALL=True
或
CORS_ORIGIN_WHITELIST = [
    'google.com',
    'hostname.example.com',
    'localhost:8000',
    '127.0.0.1:9000'
]

index.js:1375 Warning: Failed prop type: Invalid prop id of type array supplied to Select, expected string.

expected to return a value in arrow function array-callback-return

A map() creates an array, so a return is expected for all code paths (if/elses).

If you don’t want an array or to return data, use forEach instead.