Use it
In browser
Powered by jsDelivr, you can use the latest version of Formula.js:
<script src="https://cdn.jsdelivr.net/npm/jstat@1.9.2/dist/jstat.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/formulajs/formulajs@2.9.3/dist/formula.min.js"></script>
In node
Install the package:
npm i @formulajs/formulajs
Play with it
With Formula.js you can recreate spreadsheet formula with JavaScript using the functions you know.
You can review some usages and play online on the functions pages.
Spreadsheet to JavaScript syntax
Considering the following spreadsheet:
The Formula.js equivalent would be:
// =SUM(A1:C1)
formulajs.SUM([1, 2 , 3])
// returns > 6
// =SUM(A1:C2)
formulajs.SUM([[1, 2 , 3], [4, 5, 6]])
// returns > 21
JavaScript differs from Excel
Formula.js tries to recreate the formula you know and like from your spreadsheet tool. However the two environments differs from each other.
For example =2^3
is a valid Excel function that will return 8
. The ^
operator means something else in JavaScript
(2^3
return 1
, you can learn more here why). With Formula.js you
can write formulajs.POWER(2, 3)
which is equivalent to Math.pow(2, 3)
in plain JavaScript.
Migration guide
From formulajs
If you were previously using formulajs from Sutoiku, some functions have been removed, due to dependency simplification.
Text functions:
FIXED, TEXT, DOLLAR, VALUE
Math functions:
MDETERM, MINVERSE, MMULT, MUNIT
Otherwise the 2 packages are fully compatible. You can swap them.
From @handsontable/formulajs
The code of this package is originally forked from @handsontable/formulajs version 2.0.2 (released in January 2020). The two packages were identical at the time. There is no regression, only fixes and new functions since the fork.