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Hello, this is ExaNam. Today is the second lecture on crawling. Practice file download link https://drive.google.com/file/d/1NIVA... One thing to keep in mind before crawling is that you should only crawl basic data that is allowed to be crawled. If you use intellectual property data that is not allowed to be crawled for personal gain, various problems may occur, so think carefully before crawling and be careful! In the previous class, we learned about crawling using Internet Explorer, and this class will learn about crawling using xmlHttp.