4x-Calculator

This is a quick mathematical calculator

Last added feature

RegexValidator, you can use for validate inputs or form

const form = {
  name: RegexValidator.onlyLetters({ capitalize: true, length: { minvalue: 5, maxvalue: 30 } }),
  lastname: RegexValidator.onlyLetters({ capitalize: true, length: { minvalue: 5, maxvalue: 30 } }),
  phone: RegexValidator.onlyNumbers(),
  // if the email doesn't contains '@gmail.com' returns false
  email: RegexValidator.coincidence("@gmail.com", "@outlook.com"),
  address: RegexValidator.onlyLettersAndNumbers({ capitalize: true, allowSpacing: true }),
  // is obligatory to have only 2 values, 3 or 1 returns false
  age: RegexValidator.implicitLength(2) 
}

Instalation

npm

npm i ax-calculator

yarn

yarn add ax-calculator

• Import / Require

//esm
import * as ax from 'ax-calculator'
import { ... } from 'ax-calculator

//cjs
const ax = require('ax-calculator')
const { ... } = require('ax-calculator')

Objects and their operations

Please be informed of every change that is made to this calculator, many more operations are being added that can help you and an example of use is given.

Basic Operations

• Sum, substract, product, division, module, root, raise to, Chaining class

BasicOperations.sum(2, 5, 8, 4, 11) // { result: 30, toNegative: [Function: toNegative] }
BasicOperations.substract(304, 20, 51) // { result: 233, toNegative: [Function: toNegative] }
BasicOperations.product(35, 1, 9) // { result: 315, toNegative: [Function: toNegative] }
BasicOperations.division(25, 5) // 5.00
BasicOperations.module(40, 4) // 0
BasicOperations.root(1296, 4) // 6
BasicOperations.raiseTo(3, 5) // 243

const chaining = new BasicOperations.Chaining()

console.log(chaining.baseNumber(5).multiply(4).divide(2).value); // 10

Base

• binary to base 10, to base

Base.toBase(20, 4) // -> 110
Base.binaryToBase10(1001) // -> 9

Fractions

• Sum, substract, product, division, simplify, destructure

Fractions.sum(1,2,-4,6) // 1/2 + (-4/6) -> -1/6
Fractions.substract(-5,2,4,7) // -5/2 - 4/7 -> -43/14
Fractions.product(10,2,-5,4) // 10/2 * (-5/4) -> -25/4
Fractions.division(5,3,7,2) // (5/3)/(7/2) ->10/21
Fractions.simplify(154, 6) // 77/3
Fractions.destructure("12/5") // { top: '12', bottom: '5' }

Equations

• Secoond degree

// 2x² - 3x + 3 = 0
Equations.secondDegree(2, -3, 3) // { x1: '3/4 + 𝓲√15/4' , x2: '3/4 - 𝓲√15/4'  }

Percentage

• What percentage is, percentage of, percent from percent, total from percent

// What percentaje is 12 out of 30?
Percentage.whatPercentageIs(12, 30) // 40.00%

// How much is 7% of 39?
Percentage.percentageOf(7, 39) // 2.73

// If 30% is 10, then 60% is...
Percentage.percentFromPercent(30, 10, 60) // 20

// If 10% is 20, the total is...
Percentage.totalFromPercent(10, 20) // 200

Rule of three

• Simple

RuleOfThree.simple("direct", 10, undefined, 60, 90) // 15

Triangles

• Functions return information about triangles

Triangles.angle14_76()

/*
{
  hypotenuse: 'k√17',
  opposite: 'k',
  adjacent: '4k',
  sin: 'k/k√17',
  cos: '4k/k√17',
  tan: 'k/4k'
}
*/

Linear Regression

• Simple

var array_x = [100, 90, 80, 45, 50, 50, 60, 40, 25, 20];
var array_y = [3, 5, 9, 10, 20, 21, 24, 24, 27, 35];

console.log(LinearRegression.simple(array_x, array_y));

//
/*
{
  a: -0.34788,
  b: 37.28128,
  equation: '-0.34788x + 37.28128',
  coefficient: [Function: coefficient]
}
*/

Area

• Triangle, rectangle, circle, square, square2, trapeze

// ...
Area.triangle(4, 3) // 6
Area.circle(5) // 25π
// ...

Operations

• Hypotenuse, to roman, log, factorial, double factorial, combinatorial, fibonacci, divisors

Operations.hypotenuse(7, 9) // -> √11.40
Operations.toRoman(420); // CDXX

// log5x = 4
Operations.log(5, null, 4) // 625

// 4!
Operations.factorial(4); // 24

// 10!!
Operations.doubleFactorial(10); // 3840
Operations.combinatorial(7, 3); // 35

Operations.divisors(25); // [ 1, 5, 25 ]

Operations.fibonacci(13)

/*
Output:

[
    0,  1,  1,  2,  3,  5,
    8, 13, 21, 34, 55, 89,
    144
]
*/

Vectors

• Sum, Substract, Product, unit vector

// (3, 6) + (2, -7)
var vector_a = [3, 6];
var vector_b = [2, -7];

// Sum or sustract returns object
Vectors.sum(vector_a, vector_b)

/*
  {
    x: 5,
    y: -1,
    expression: '5i - 1j',
    cartesian: [ 5, -1 ],
    unit_vector: [ 0.98, -0.19 ]
  }
*/

// (2i - j) • (5i + 2j)
Vectors.product( [2, -1], [5, 2] ) // 8

// (-3, 5)
Vector.unitVector(-3, 5);

System of equations

• Double

var equation1 = [1, 2, 10];
var equation2 = [2, -1, 5]

console.log(SystemEquation.double(equation1, equation2))
// { x: 4, y: 3 }

Chemical elements

• Show, obtain by group, obtain by family

ChemicalElements.show("H")

/*
  {
    simbol: 'H',
    atomic_number: 1,
    atomic_mass: 1,
    name: 'Hydrogen',
    group: 'I A',
    type: 'Non-metal',
    electroegativity: 2.2
  }
*/

//  I A, II A, III A, ...
ChemicalElements.obtainByGroup("I B") // object

// You will place the family of the elements you want to obtain
ChemicalElements.obtainByFamily("Halogen") // object

Angle measurements system

• Radian, Centesimal, Sexasegimal (toRadian, toCentesimal, toSexagesimal)

...

// 2π/5
AngleMeasurements.radian("2/5").toCentesimal() // 80

// 40ᵍ
AngleMeasurements.centesimal(40).toRadian() // π/5

// 45°
AngleMeasurements.sexagesimal(45).toCentesimal() // 50

...

Validator

• isNumber, isString, isObject, isUndefined, containsString, containsNumber ...

...

Validator.isNumber("2") // false
Validator.isString("test") // true

Validator.containsString([1,2,3,4]) // false
Validator.containsNumber(["1", "2", "3", 4]) // true

...

Clock

• date, time

Clock.time() // Sample: 23:10

// the default format is US
Clock.date() // month/day/year

Browser

• setCSSVariable, getCSSVariable, getBrowserDetails, isMobile, getComputedStyleById

...

Browser.isMobile() // false

Browser.getComputedStyleById('main', 'margin-top') // 0px
Browser.getComputedStyleById('nav', 'border') // 2px solid rgb(123, 123, 123)

Browser.setCSSVariable('--myvariable', '4px')
Browser.getCSSVariable('--myvariable') // '4px'

...