With a ready state of 4 and a status code of 200, you're ready to process the server's data and that data should be what you asked for (and not an error or other problematic piece of information).
如果就绪状态是4而且状态码是 200，就可以处理服务器的数据了，而且这些数据应该就是要求的数据（而不是错误或者其他有问题的信息）。
With a ready state of 4 and a status code of 200, you're ready to process the server's data and that data should be what you asked for (and not an error or other problematic piece of information).
如果就绪状态是4而且状态码是 200，就可以处理服务器的数据了，而且这些数据应该就是要求的数据（而不是错误或者其他有问题的信息）。
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