[跨域資源共享CORS](%E8%B7%A8%E5%9F%9F%E8%B5%84%E6%BA%90%E5%85%B1%E4%BA%ABCORS.md) [call、apply和bind的用法和區別](call%E3%80%81apply%E5%92%8Cbind%E7%9A%84%E7%94%A8%E6%B3%95%E5%92%8C%E5%8C%BA%E5%88%AB1.md)