ปัญหาน่าปวดหัวของ No ‘Access-Control-Allow-Origin’

Access to XMLHttpRequest at ‘http://localhost:4000/test1′ from origin ‘http://localhost:8080′ has been blocked by CORS policy: No…Continue reading on Lazy-Dev »

Link: https://medium.com/lazy-dev/%E0%B8%9B%E0%B8%B1%E0%B8%8D%E0%B8%AB%E0%B8%B2%E0%B8%99%E0%B9%88%E0%B8%B2%E0%B8%9B%E0%B8%A7%E0%B8%94%E0%B8%AB%E0%B8%B1%E0%B8%A7%E0%B8%82%E0%B8%AD%E0%B8%87-no-access-control-allow-origin-1e3d24932d9b?source=rss——javascript-5