Multilingual Simple & Scientific Calculator Plugin

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License: MIT
Multilingual Simple & Scientific Calculator Plugin

A jQuery plugin that pops up a simple or scientific calculator to an input field on focus. Clicking the USE button on the calculator will insert the current value to your input field.

It also contains 15 localisations that you can use this plugin on your websites in other major languages.

See Also:

How to use it:

1. Include the latest jQuery Library and jquery.calculator.js library.

<!-- Core -->
<script src="/path/to/cdn/jquery.slim.min.js"></script>
<script src="/path/to/jquery.plugin.js"></script>
<script src="/path/to/jquery.calculator.js"></script>

<!-- Locals -->
<script src="/path/to/jquery.calculator-ca.js"></script>
<script src="/path/to/jquery.calculator-da.js"></script>
<script src="/path/to/jquery.calculator-de.js"></script>
<script src="/path/to/jquery.calculator-es.js"></script>
<script src="/path/to/jquery.calculator-fr.js"></script>
<script src="/path/to/jquery.calculator-hr.js"></script>
<script src="/path/to/jquery.calculator-it.js"></script>
<script src="/path/to/jquery.calculator-ms.js"></script>
<script src="/path/to/jquery.calculator-nl.js"></script>
<script src="/path/to/jquery.calculator-no.js"></script>
<script src="/path/to/jquery.calculator-pl.js"></script>
<script src="/path/to/jquery.calculator-pt-BR.js"></script>
<script src="/path/to/jquery.calculator-ru.js"></script>
<script src="/path/to/jquery.calculator-sl.js"></script>
<script src="/path/to/jquery.calculator-sr.js"></script>
<script src="/path/to/jquery.calculator-tr.js"></script>
<script src="/path/to/jquery.calculator-uk.js"></script>
<script src="/path/to/jquery.calculator-zh-CN.js"></script>
<script src="/path/to/jquery.calculator-zh-TW.js"></script>

2. Include the necessary stylesheet.

<link rel="stylesheet" href="jquery.calculator.css" />
<!-- OR -->
<link rel="stylesheet" href="jquery.calculator.alt.css" />

3. Call the plugin and attach the calculator to an input field.

<input type="text" id="myCalculator">
// basic calculator
  // options here

// scientific Calculator
  layout: $.calculator.scientificLayout
  // more options here

4. All plugin options.


  // 'focus' for popup on focus, 'button' for trigger button,
  // 'both' for either
  // 'operator' for non-numeric character entered,
  // 'opbutton' for operator/button combination.
  showOn: 'focus',

  // The URL for the trigger button image
  buttonImage: '',

  // True if the image appears alone
  buttonImageOnly: false,

  // Call back function to determine if a keystroke opens the calculator
  isOperator: null,

  // The name of jQuery animation for popup
  showAnim: 'show',

  // Animation options.
  showOptions: {},

  // Duration in ms
  duration: 'normal',

  // Append text to the input
  appendText: '',

  // Use jQuery UI Themeroller
  useThemeRoller: false,

  // Additional CSS class(es)
  calculatorClass: '',

  // Shows formula
  showFormula: false,

  // Text across the top of the calculator
  prompt: '',

  // '  BSCECA', '_1_2_3_+@X', '_4_5_6_-@U', '_7_8_9_*@E', '_0_._=_/'
  layout: layoutStandard,

  // The initial value
  value: 0,

  // The numeric base
  base: 10,

  // The number of digits of precision
  precision: 10,

  // Save memory into cookie
  memoryAsCookie: false,
  cookieName: 'calculatorMemory',
  cookieExpires: 24 * 60 * 60,
  cookiePath: '',

  // Use degress for trigonometric functions
  useDegrees: false,

  // Restrict characters to numerics
  constrainInput: true,

  // callback functions
  onOpen: function(value, inst) { 
    // do something 

  onButton: function(label, value, inst) { 
    // do something 

  onClose: function(value, inst) { 
    // do something 


4. API methods

// update options

// add or update the definition for a key to appear on the calculator
// code (string) is the two-character code that identifies this key and can be used within a layout to denote its position. Use lower-case characters for your names to avoid conflicts with the standard keys.

// label (string) is the display text that appears on the button for this key. If prefixed by a hash (#) the rest of the label is used to look up the actual text in the regional settings. For example, '#erase' looks for an 'eraseText' setting for the button text and an 'eraseStatus' setting for a popup tool-tip.
// type (enumerated) denotes the type of key and must be one of the defined constants ($.calculator.): digit for digits that make up a number, binary for binary operators (need two values), unary for unary operators (only need one value), control for special control buttons, or space for empty space between buttons.
// func (function) is the function to call when this key is activated. The function accepts a single parameter, being the instance settings for the calculator, and should update its state via the curValue and prevValue (for binary operations) fields. See examples on the key definitions page.
// style (string) is a space-separated list of CSS styles to apply to this button. Each style is prefixed by 'calculator-' when applied.
// constant (string) is the name of a constant (within $.calculator) that can be used instead of the code to position a key within a layout.
// keystroke (char or number) is the character or keycode that maps onto this button for keyboard-driven calculations.
// keyName (string, optional) is the name of the keystroke above (up to three characters) that is shown when the Alt is held down. This value is not needed if the keystroke is a standard character.
$.calculator.addKeyDef( code, label, type, func, style, constant, keystroke, keyName)

// update options
$(selector).calculator('option', options)
// or
$(selector).calculator('option', name, value)

// get option value
$(selector).calculator('option', name)

// destroy

// show

// hide

// enable

// disable

// check if is disabled



  • Updated demos & doc

v2.0.1 (2014-06-21)

  • update to the latest version.

v2.0.0 (2014-01-19)

  • update to the latest version.

This awesome jQuery plugin is developed by kbwood. For more Advanced Usages, please check the demo page or visit the official website.