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henry-math-input

v2.0.10

Published

## math-input

Downloads

9

Readme

math-input

Description from original Khan project

Khan Academy's new expression editor for the mobile web. Used in the Perseus exercise framework to power math input and expression editing on small screens.

Built with React, Redux, MathQuill, Aphrodite, and more.

Disclaimer: math-input is under active development and, in fact, is yet to be fully rolled out across khanacademy.org. Its API could (and most likely will) change substantially in the near future!

Supported Features

  • Multiple keypad configurations, so as to accommodate for a range of possible input types (i.e., fractions/mixed numbers and algebraic expressions).
  • Multi-page keypads, with swipeable page navigation.
  • Touch-and-drag interactions (as supported by the stock iOS and Android keypads).
  • A draggable cursor with a detached handle, for fine-grained control on touch devices.
  • Custom state transitions for the editing experience, to streamline expression entry.

Additional changes and Demo

  • Click is supported (implemented as touchStart+touchEnd) so now it works in non-mobile browsers
  • there is not a hard-coding to a "root" div, but one or many divs of class "math-input"
  • value is accesible via an attribute in the containing div, so values can be used in later forms or read from other javascript code

A live demo is available via GitHub Pages.

Note that, in this version, there is no need to enable mobile emulation mode in order to use the keypad in a desktop browser.

To run the demo locally, clone the repo, npm install, npm run watch, and open the index.html page. The local behaviors can similarly be customized via the editor @ custom.html.

License

MIT License