What the url anchor do for baidu search engine?

Question

I am exposed to HTTP for several days, and today I encounter a problem as regards baidu search engine. Details as follow:

As I open http://www.baidu.com/ with desktop browser and type in some keyword, then press ENTER, the browser url displayed is something like http://www.baidu.com/#wd=stackoverflow&ie=utf-8 with stackoverflow as the search keyword.

Please notice the anchor #wd here. It seems pretty strange to me though, eg. as to Google for example, it would be something like https://www.google.com/search?q=stackoverflow without any anchor.

I use Fiddler (http://www.telerik.com/fiddler) to inspect the HTTP packet interaction, and curiously found something like GET /s?ie=utf-8&wd=linux HTTP/1.1 after several HTTP packet interaction.

In the whole process, the server only responses HTTP/1.1 200 OK and there is no stuff like HTTP/1.1 302 Moved Temporarily etc.

So how could it finally redirect to GET /s?ie=utf-8&wd=linux HTTP/1.1, what does the browser do to the anchor #wd?

Thanks in advance.

After a conversation with a front-end guy, he told me it's something about Async Javascript ... — jtuki
– jtuki, Commented Mar 11, 2014 at 13:49

EricLaw · Accepted Answer · 2014-03-11 19:58:56Z

1

The component of the url after the # sign is called the URL Fragment. It is not directly sent to the server as a part of the HTTP request (which is why you don't see it in Fiddler); it is only accessible by the JavaScript running on the page.

Some sites use URL fragments when they've used AJAX techniques to populate a page; see http://blogs.msdn.com/b/ieinternals/archive/2011/05/17/url-fragments-and-redirects-anchor-hash-missing.aspx for some discussion.

answered Mar 11, 2014 at 19:58

EricLaw

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2 Comments

jtuki Over a year ago

Much thanks for your info! Why the Baidu search engine defaultly use #wd=keywordinstead of s?q=keyword just like what Google do? Is there any benefit from doing so?

EricLaw Over a year ago

Google also can use the https://www.google.com/#q=yourqueryhere syntax, depending on what settings you have configured. The value in using # instead of ? is that the fragment syntax allows all processing to happen using AJAX on the client, while any change to the value after the ? requires a browser navigation. The benefit of using a query string (?) is that it works without JavaScript enabled.

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