MathKey enables you to share math by converting your keyboard formulated input to presentation and content markup. Since the math generated is based on open standards, it does not depend on mathKey and may be shared anywhere. MathKey works best with mathML enabled web browsers.

This program is open source. In general, you may use it however you wish, but you may not fork it.

Type math into a mathKey enabled input. You may also:

• Copy math to paste in your documents:
  • for presentation:
    - click the formula, or,
    - focus the formula and press ctrl+c
  • for content:
    - double click the formula, or,
    - focus the formula and press ctrl+c+c
  
  
• Style most math using chainable font modifiers:
  - size (large, small)
  - visibility (bold, light, hide)
  - type (serif, struck, script, mono)
  
  Examples:
  hide:0 + large:A + small:b - bold:100.0 - light:10 = struck:R, or,
  bold:Energy = small:bold:mass ** light:large:C^2
  
  The strike modifier is also available during borrow and carry (see example)
  
  
• Modify the interpretation of input or view the current set of math keys by pressing ctrl+` (hold control key and backtick) within a mathKey enabled text area.
  
  
• Share the math in a mathKey enabled text area:
  - press the share icon, or
  - pres ctrl+' (hold control key and apostrophe)
  
  
• Use shared content such as external math or an image. Import objects into as follows:
  • single object: stackrel("url")
    - example: stackrel("https://mathkey.org/mk/#intx")
  • reusable reference: stackrel(name,"url")
    - example: stackrel(a,"https://mathkey.org/mk/#intx")
  • Images may be resized by appending height and/or width:
    stackrel("https://mathkey.org/images/mklogo.png 64h"), or,
    stackrel(a,"https://mathkey.org/images/mklogo.png 256w"), or,
    stackrel(a,"https://mathkey.org/images/mklogo.png 32h 128w")

Quickstart

1. Include the javascript source: <script type="text/javascript" src="mathKey.js" data-mk-autostart="false"></script>
2. Present input element keystrokes as MathML within an output element: mathKey.processIO(input, output);

If the input is a textarea, any translated symbols within the input.value are first literalized by backspace before deletion by subsequent keystrokes. A complete list of rules may be accessed via CTRL+` sequence within the input.

Initialization

Set the script tag attribute data-mk-autostart to a callback:

//data-mk-autostart="initMk":
function initMk(mathKey) {
	mathKey.configure({parameters});
}

If data-mk-autostart is otherwise true, mathKey will be initialized with default configuration parameters. If data-mk-autostart was not present or false, mathKey will not be initialized. mathKey.configure([{parameters}]); //may be used to re-initialize/configure mathKey anytime

Configuration parameters

• checkformathml: Check if the browser natively supports MathML // true
• notifyifnomathml: warn the user if their browser does not support MathML // true
• notifywarnings: notify the user of warnings using a standard alert // true
• notifywarningscallback: override the alert and notify this callback function with an array of warnings instead // null
• document: Parent object // document
• translateonstart: translate elements of a predefined class to presentation markup upon instatiation //true
• translateclass: Translate the contents of elements with this class by default when translate() is called // "_MK_"
• fallbackcssurl: fallback css file for non MathML compliant browsers
• fallbackliburl: fallback library for non MathML compliant browsers
• mstyle: Attributes for primary presentation MathML style // {displaystyle:'true', scriptsizemultiplier:'0.8', scriptminsize:'6px', mathcolor:'', fontfamily:'serif'}
• manage: a key for a CTRL+key sequence to bring up a rule entry management interface // "`"
• managementinterface: Management interface template // { mkMng = {html:["header","prepend entry with","entry html containing %MKROWCOLOR% %MKENTRY% merge parameters","append entry with","footer html"], rowcolors:["#ffffff","#fcfcfc"], style: {} }

Methods

• processIO(input, output [,callback]): process keystrokes within an input textarea and generate presentationML within an output container. A mathKey property that provides access to contentML is created on the output object
• translate([class=translateclass]): translate objects of this class to MathML. After translation, the mktranslated event is fired
• parseR(str): Translates str to return a MathML node
• rgetSymbol(str): Returns str suffix as a mathKey entry
• updateIO(input, output[, insertvalue=null, callback]): process the input textarea and generate math at the output node. If insertvalue is provided, it will be inserted at the current cursor position first. Call updateIO() without arguments to reuse the previous input, output and callback
• insertText(input, text, startfromcursor, endfromcursor): inserts text within an input object at an offset from the current cursor position to an offset from the current cursor position.
• reParen(str): fix missing parentheses [experimental]
• management(): call the management interface or override it with mathKey.management=function(symbols){};
• reInit(): refresh mathKey internal state (i.e. after adding/deleting rules via a user defined management function)
• manageReset(): resets mathKey rules to original values

If you want to enchance the code, you are more than welcome to discuss it here and email your contribution in plain text.

For all other requests, customizable support packages are available.

mathKey.js: Copyright (c) 2018-2028 TR (tr[at]mathkey.org)

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