How to distinguish whether two addresses are on the same site?

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Methods to distinguish whether two addresses are on the same site: 1. Determine by observing whether the domain names of the two addresses are the same. The domain name is the unique identifier of the website, usually composed of the host name and the top-level domain name; 2. Observe the URL paths of the two addresses. To judge, the URL path refers to the part after the domain name, which is used to specify the specific page or resource to access the website; 3. Judging by observing the page design and layout of the two addresses, each site has its own unique page design and layout. Including color, font, navigation bar, etc.; 4. Judge by observing the website logo and copyright information of the two addresses, etc.