URL with question mark and without

  • Thread starter Thread starter sammie194
  • Start date Start date
AI Thread Summary
The presence of a question mark in a URL indicates the start of query parameters, allowing data to be passed to the server for processing. Without a query string following the question mark, the URL may lead to an error response. When a browser accesses a URL without a question mark, it sends a standard HTTP GET request to the server, expecting a 200 OK response with the webpage's HTML. In contrast, a URL with a query string enables the server to handle specific parameters, which can affect the content returned. Understanding this distinction is crucial for effective web navigation and data retrieval.
sammie194
Messages
6
Reaction score
0
Question:

How would the action of a browser differ if you asked it to "find the document" at the URL,
http://stargazer.universer.org
as opposed to
http://stargazer.universer.org?

My attempt:

The question mark permits data to be passed from the web browser to the program which generates the web page,
so it will find the document you're asking for, in opposition to the URL without the question mark.

Is this right?
 
Physics news on Phys.org
sammie194 said:
Question:

How would the action of a browser differ if you asked it to "find the document" at the URL,
http://stargazer.universer.org
as opposed to
http://stargazer.universer.org?

My attempt:

The question mark permits data to be passed from the web browser to the program which generates the web page,
so it will find the document you're asking for, in opposition to the URL without the question mark.
Is this right?

The purpose of the question mark in the URL is to denote the beginning of what are called query parameters. Appending only a question mark as in your 2nd example won't do anything, except possibly cause an error response. For more info, see http://en.wikipedia.org/wiki/Query_string.
 
Mark44 said:
The purpose of the question mark in the URL is to denote the beginning of what are called query parameters. Appending only a question mark as in your 2nd example won't do anything, except possibly cause an error response. For more info, see http://en.wikipedia.org/wiki/Query_string.

Thank you! That makes much sense, as the query string isn't there an question mark isn't needed.
 
The way that browsers work is that when you type in a URL such as http://stargazer.universer.org and press Enter, your browser sends an HTTP (HyperText Transfer Protocol) GET request to the server. If everything goes well, it sends a 200 OK response with a body that contains the HTML markup for the web page.

If you type in the URL with a query string, code on the server processes the parameters in the query string. Everything after the ? character is the query string, which consists of key and value pairs, separated by % character, like so.
<URL>?param1=<something>&param2=<somethingelse>
 
Back
Top