Browse request PHP CSS JS process what is the

I open the browser output a request PHP discovery CSS js php image is a separate request what is the principle of this?

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I open the browser output a request PHP discovery CSS js php image is a separate request what is the principle of this?

is a request down, and then the browser read into the file, by parsing the corresponding label, and then through the layout of the results of the layout to draw the corresponding interface

Parse HTML, construct syntax tree, extract CSS and JS nodes, initiate HTTP request

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