Lambda + API Gateway No 'Access-Control-Allow-Origin' header
下記のように、AWS API Gatewayで[CORSの有効化]をなんど試してもうまくいかない場合
Access to XMLHttpRequest at '*.ap-northeast-1.amazonaws.com/*' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
exports.handler = async (event) => { const response={}; return response; }
const response = { statusCode: 200, headers: { "Access-Control-Allow-Origin" : "*", "Access-Control-Allow-Credentials" : true }, body: JSON.stringify('Hello from Lambda!') };
JavaScript JSONオブジェクト変数の階層を再帰で掘る - Mjeld Technologies