API 썸네일형 리스트형 IntersectionObserver We can handle the element impressions using IntersectionObserver API. But this API is not supported some browsers like IE. But we can use this API in more browsers using with IntersectionObserver polifill. But this is not covered all browser. This polifill supports below.. Chrome ✔ Firefox ✔ Safari 6+ Edge ✔ Internet Explorer 7+ Opera ✔ Android 4.4+ You can see the manual in Intersection Observe.. 더보기 [Postman] Example of Pre-request Script When I was doing a project to make REST API Client, I had to make access token before request REST API.If the access token were expired, refreshing access token process was very bothersome process..When I using Postman to testing my REST API, I could make this authentication process to automatically with pre-request script.And easily access the authorization token with environment variables.. He.. 더보기 Run Graphql Server with graphql-yoga graphql 서버를 가장 쉽게 띄우는 방법은 graphql-yoga 모듈을 이용하는 것이다.graphql-yoga: https://github.com/prisma/graphql-yoga index.ts와 app.ts를 구분하여 서버 설정 부분은 index.ts에 정의해주고서버 내에 올라갈 yoga 설정의 경우 app.ts 로 분리하여서 작업.class App { public app: GraphQLServer; constructor() { this.app = new GraphQLServer({ schema, context: req => { const { connection: { context = null } = {} } = req; return { req: req.request, context, }; }.. 더보기