In SharePoint 2010, if you have ever worked on customizing the search results, you would know the real pain of modifying the xslt templates. This has been changed drastically in SharePoint 2013. So no more XSLT Templates!! Only the HTML and .js files.
The Display templates are a collection of .HTML and .JS files.
- Display templates are HTML and JavaScript rather than XSL
- Display templates are configured for the Site and Site Collection rather than for a Web part
- Display templates are applied with rules and logic
- Display templates are applied to individual result items, not the entire result set
- Display Templates are used for Results of all kinds, search results, content by search results, and refiners
Where To See: Go to Master Page Gallery -> Display Templates -> Search