Introduction to the network feature in the Chrome developer tools
- The first column, name: The request, typically treats the last part of the URL as a name.
- The second column status: The state code of the response, shown here as 200, indicates that the response is normal. Through the status code, we can determine whether the request has been sent after the normal response.
- Third column type: The requested document type. Here is the document, on behalf of our request is an HTML file, the content is some HTML code.
- Fourth column initiator: the request source. Used to mark which object or process the request originated from.
- Column Fifth size: The file downloaded from the server and the requested resource size. If the resource is obtained from the cache, the column displays the from cache.
- Column Sixth: The total time that the request was initiated to get the response.
- Seventh column waterfall: Visual waterfall flow for network requests.
The response is divided into General section, request header, response header:
Among them, General includes:
- The request URL is the requested URL,
- Request method for the requested methods
- Status code is the response state code,
- Remote address is the location and port of the server
- Referrer policy is a Referrer discriminant strategy.
Python crawler knowledge point--chrome developer Tools Network
