Facebook typeahead search explained
We also experimented with a large number of user interface variants using A/B testing and more qualitiative usability studies to help us make some thorny decisions.
- Number of results: We wanted to show enough entries so that you would serendipitously stumble upon fun results while typing, yet showing fewer results would be faster and be less distracting. Our ultimate design varies the number of results shown based on your browser window height.
- Searching: Even though we made the Enter key auto-select the first result, we wanted to ensure users who wanted to search still could. We experimented heavily with the placement, wording, and appearance of the “See More Results” link that takes you to our traditional search page.
- Mouse vs. keyboard: While Facebook employees are heavy keyboard users, we discovered most users prefer to use the mouse to select from the typeahead. This led us to focus on mouse use-cases more than we naturally would have.
Read full post here.