PHP 断点续传实例详解.docx,JS高级---笔记，全职博客培训(Http PHP example.Docx)

关于服务器返回302状态码。它会在header中加入Location，告诉浏览器要跳转到哪里，浏览器会直接跳。ajax是感觉不到302，它收到状态同样是200.(The server returns the 302 state code. It adds Location to the header to tell the browser where to jump, and the browser will jump directly. AJAX is less than 302, and i