How can I track internal search with JavaScript function?

When Piwik PRO tracks an internal search, it grabs a piece of a URL address with query parameters like q, query, s, search, searchword, and keyword. If you’re using different query parameters then you can add them to the internal search settings, and the tracking will work fine (Menu > Administration > Sites & apps > Select a site or app > Data collection > Keywords from your internal search engine). 

But in some cases, a URL address doesn’t store query parameters, and then you need to use a JavaScript function to record and send internal search data.

To track internal search with JavaScript function, follow these steps:

1. On the page with search results, before  _paq.push(['trackPageView']); use the following function:

   _paq.push(['trackSiteSearch','keyword','category','search_count']);

2. You may use variables in Tag Manager to capture each piece of information — keyword, category, and search count.
3. If you have variables, add them to the function:

   _paq.push(['trackSiteSearch',{keyword_variable},{category_variable},{search_count_variable}]);