In Express.js I used to have this kind of code:
app.use((req, res, next) => {
res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
res.header('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, OPTIONS');
next();
});
How do I do the same thing with Koa.js? I need to preset these several http headers for each server response.
Finaly I found how to do it.
app.use(async (ctx, next) => {
ctx.set('Access-Control-Allow-Origin', '*');
ctx.set('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
ctx.set('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, OPTIONS');
await next();
});