CORS
Read Original이 글은 브라우저 보안 규칙인 CORS(Cross-Origin Resource Sharing)에 대해 상세히 설명합니다. 다른 출처의 리소스 접근이 차단되는 원인을 분석하고, Node.js 서버 예제를 통해 CORS 문제를 직접 재현합니다. 또한 'Access-Control-Allow-Origin' 헤더를 추가하는 해결 방법과 단순 요청(Simple Request)의 조건을 포함한 CORS의 핵심 개념을 다룹니다.
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