javascript - What does the question mark at the end of filenames mean? - Stack Overflow

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In some project I've met these lines:

$.get("defaults/data.json?", ...);
$.get("defaults/structure.html?", ...);
$.get("defaults/style.css?", ...);

On server side these files without any extra symbols, so I'm wondering what does the question mark at the end of files mean?

In some project I've met these lines:

$.get("defaults/data.json?", ...);
$.get("defaults/structure.html?", ...);
$.get("defaults/style.css?", ...);

On server side these files without any extra symbols, so I'm wondering what does the question mark at the end of files mean?

• javascript
• ajax

Share Improve this question Follow edited Jan 30, 2012 at 14:09 Shawn Chin 87k2020 gold badges167167 silver badges193193 bronze badges asked Jan 30, 2012 at 14:07 megasmegas 21.8k1212 gold badges8282 silver badges134134 bronze badges

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3 Answers 3

Sorted by: Reset to default 6

The ? in a URL denotes the start of the query string. A ? at the end with no variables following it is usually an unnecessary way of saying "this has absolutely no querystring".

It would be possible with a URL rewriting engine for example, to examine the ining REQUEST_URI to see if it ends with ? and take a different action than requests not ending in ?, but that would be an unusual usage. It would much more mon to just specify some value in the query string.

"?" is the separator for supplying arguments via a GET request.

? states you're providing arguments via HTTP GET.

For example if you want to send a=1 and b=2 , you would do http://mysite./myfile.php?a=1&b=2

Shai.

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