When I was browsing the web today, when I clicked on the web link, an error page appeared
This is something that happens often, but the page that pops up is different. For example:
Let’s learn about it together
1. What is 404?
404 is one of the standard response messages of HTTP, so how HTTP works: Look at the picture below
When the user When browsing the web, the server cannot provide information normally. For example, the user enters an incorrect link; or the server cannot respond and cannot find the reason. At this time, this 404 page will appear on the page. 404 is an information code, usually followed by a readable message fed back to the user: Not Found. It means that the page does not exist or is a deleted file.
2. Why is it called 404?
It is said that before the third technological revolution, the form of the Internet was a large central database, and this database was set up in Room 404. At that time, all requests were completed manually. If the file required by the requester was not found in the database, or the requester wrote the wrong file number, the user would get a return message: room404: file not found. Later, after the rise of the Internet, people became accustomed to using 404 as the error code for files not found on the server.
3. Why design a 404 page?
Browse the web and find a link you want, but when you click on it, it is an error page, and you immediately feel a bad rush~~Design a creative The 404 page can reduce user complaints. Therefore, a good website and a good 404 error page are a must.
There are many creative 404 pages on the Internet, and now 404 is even used for public welfare activities. By copying a piece of code into the 404 design code of the website, public welfare information can be spread through the Internet

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