| Datalist polyfill (auto-complete) | Adds auto-complete functionality to specific <input> fields by dynamically displaying a list of words that match the <datalist>. | datalist |
| Details/summary polyfill (expandable/collapsible content) | The <details> and <summary> elements allows content to be expanded and collapsed. | details |
| Input type="date" polyfill (date picker) | The <input type="date"> element dynamically generates a calendar interface for selecting a date in a form. | datepicker |
| Input type="range" polyfill (slider control) | The <input type="range"> element displays a slider control bar. | slider |
| MathML polyfill | Emulates MathML support for browsers that do not have MathML support. | mathml |
| Meter polyfill | The <meter> element displays a scalar measurement in a known range. | meter |
| Progress polyfill (progress bar) | The <progress> element displays the progress of a task. | progress |