75Network & protocolsTry it nowCommon trap

Status Code

Status code

The three-digit number the server returns, saying whether the request succeeded.

For example

200 means the request succeeded; a 404 probably means the URL is wrong.

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Related terms

The base protocol for sending data over the internet; it defines how client and server talk.

For example

When I type a URL in the browser, I am sending a request to the server over HTTP.

The data and instructions a client sends to a server, usually with a URL, method and parameters.

For example

I send a request to the server to get today's word list.

The data and result the server returns after receiving a request.

For example

The server returns a JSON response containing the word and its meaning.