Because if there is no forward slash at the end of the subfolder, two HTTP requests will be generated, which will affect efficiency. If you write a link like this: href="http://www.w3school.com.cn/html", two HTTP requests will be generated to the server. This is because the server will add a forward slash to the address and then create a new request, like this: href="http://www.w3school.com.cn /html/". |
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