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math-expression-evaluator

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math-expression-evaluator

A flexible math expression evaluator

  • 2.0.6
  • latest
  • Source
  • npm
  • Socket score

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1.2M
decreased by-1.15%
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1
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What is math-expression-evaluator?

The math-expression-evaluator is an npm package that allows for parsing and evaluating mathematical expressions. It can handle various mathematical operations, including basic arithmetic, logical operations, and functions.

What are math-expression-evaluator's main functionalities?

Evaluating Mathematical Expressions

This feature allows for the evaluation of a string-based mathematical expression, including support for functions like square root.

var mexp = require('math-expression-evaluator');
var result = mexp.eval('2+3*sqrt(4)');

Support for Variables in Expressions

This feature enables the evaluation of expressions with variables, where the values of the variables can be provided as an object.

var mexp = require('math-expression-evaluator');
var result = mexp.eval('x^2 + y', {x: 3, y: 4});

Custom Functions

This feature allows users to add custom functions to the evaluator, which can then be used in expressions.

var mexp = require('math-expression-evaluator');
mexp.addToken([
  {type: 3, token: 'sum', show: 'sum', value: function(a, b) { return a + b; }}
]);
var result = mexp.eval('sum(1,2)');

Logical Operations

This feature supports logical operations within expressions, enabling the evaluation of expressions that include logical comparisons.

var mexp = require('math-expression-evaluator');
var result = mexp.eval('1 < 2 && 3 > 2');

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Package last updated on 18 Nov 2024

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