When you go to stackoverflow.com in Google Chrome and if you put a space infront of last character, the address bar changes to that in my screen shot below.Then you can press Tab and you can type anything, and pressing enter will take you to the search page with your search term:  https://stackoverflow.com/search?q=anything.How can I do same thing for my site?
How to create site search feature in address bar of Chrome?
google chrome;site search
Assuming that you have a search feature on your site then you can take advantage of the OpenSearch functionality in Chrome.Taken from the Chromium documentation:To enable this for all users (even those who haven't used your search form):On your site's homepage provide a link to anOpenSearchdescription document. The link to the OSDD is placed in the headof the html file. For example:<head>  <link type=application/opensearchdescription+xml        rel=search        href=url_of_osdd_file/></head>The important part of this document is the URL used to search your site.The following is an example that contains the bare minimum needed, see theOpenSearch description document specificationfor the list of values you can specify.<?xml version=1.0?><OpenSearchDescription xmlns=http://a9.com/-/spec/opensearch/1.1/>  <ShortName>Search My Site</ShortName>  <Description>Search My Site</Description> <Url type=text/html method=get       template=http://my_site/{searchTerms}/></OpenSearchDescription>When the user presses enter in the Omnibox the string {searchTerms} inthe url is replaced with the string the user typed.You can also include a suggestion service by adding another URL element with rel=suggestions such as:<Url type=application/json     rel=suggestions     template=http://my_site/suggest?q={searchTerms}     />If you include this, the omnibox will use your suggestion service to provide query suggestions based on the user's partial query.If your search box uses a GET request, then Chrome will enable this feature for uses who use it.If you don't have a search page on your site then this won't work.Props to Stephen for the initial link.