Need help with koa2-cors?
Click the “chat” button below for chat support from the developer who created it, or find similar developers for support.

About the developer

zadzbw
224 Stars 16 Forks Other 26 Commits 0 Opened issues

Description

CORS middleware for koa2

Services available

!
?

Need anything else?

Contributors list

# 306,953
JavaScr...
cors
koajs
24 commits

koa2-cors

NPM version Node version Build Status Code coverage NPM download Commitizen friendly

install

it requires node v7.6.0 or higher now

npm install --save koa2-cors

Usage

var Koa = require('koa');
var cors = require('koa2-cors');

var app = new Koa(); app.use(cors());

Options

origin

Configures the Access-Control-Allow-Origin CORS header. expects a string. Can also be set to a function, which takes the

ctx
as the first parameter.

exposeHeaders

Configures the Access-Control-Expose-Headers CORS header. Expects a comma-delimited array.

maxAge

Configures the Access-Control-Max-Age CORS header. Expects a Number.

credentials

Configures the Access-Control-Allow-Credentials CORS header. Expects a Boolean.

allowMethods

Configures the Access-Control-Allow-Methods CORS header. Expects a comma-delimited array , If not specified, default allowMethods is

['GET', 'PUT', 'POST', 'PATCH', 'DELETE', 'HEAD', 'OPTIONS']
.

allowHeaders

Configures the Access-Control-Allow-Headers CORS header. Expects a comma-delimited array . If not specified, defaults to reflecting the headers specified in the request's Access-Control-Request-Headers header.

var Koa = require('koa');
var cors = require('koa2-cors');

var app = new Koa(); app.use(cors({ origin: function(ctx) { if (ctx.url === '/test') { return false; } return '*'; }, exposeHeaders: ['WWW-Authenticate', 'Server-Authorization'], maxAge: 5, credentials: true, allowMethods: ['GET', 'POST', 'DELETE'], allowHeaders: ['Content-Type', 'Authorization', 'Accept'], })); ...

More details about CORS.

License

MIT License

We use cookies. If you continue to browse the site, you agree to the use of cookies. For more information on our use of cookies please see our Privacy Policy.