Javascript-ajax's Problem

When the client sends an AJAX request to the server, where does it go before it goes to the server php script file?

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When the client sends an AJAX request to the server, where does it go before it goes to the server php script file?

routing, which is your controller layer, handles the parsing of URLs. Ajax is also requesting requests, so you need to parse the request, to find the corresponding processing method, that is, the corresponding PHP script. If there is any wrong, please advise

Personal understanding: Frankly speaking, is the same as the input link in the address bar to access is the same, all HTTP requests

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