functions.js

functions.js is a hub of various functions or methods which act differently according to their functionality.

• Please feel free to contribute, read the contributing guide.
• The code is written in ES6.

Install

The project is up on npm and can be used in a project by:

npm install --save functions.js

Usage

Below is an example on how to use the library into your projects.

const func = require('functions.js');

console.log(func.StringFunc.SecureEmail('helloworld@example.com'));
//returns 'he********@example.com'

console.log(func.MathFunc.EuclideanDistance([3,4,5], [8,7,9]));
//returns '7.0710678118654755'

console.log(func.AlgoFunc.Reverse([17,65,100,32,98,14,25]));
//returns '[25,14,98,32,100,65,17]'

console.log(func.StringFunc.hasAtleastOneLowerCaseLetter('HELLoWORLD'));
//returns 'true'

Methods

Method Name	Category	Description	Return Type
average(arr)	math	Calculates the average of an array	number
binarySearch(arr, elem)	algorithm	Search an element using binary search tehcnique	number(position)
bubbleSort(arr)	algorithm	Sort an array using bubble sort technique	array
camelize(str)	string	Camelize a string i.e CamelCase	string
changeBase(number, original, final)	math	Convert a base of a number to any base.	number
chunk(arr, size)	math	Split array into chunks of smaller arrays of the desired size.	array
clamp(number, min, max)	math	Clamp a number.	number
collatz(number)	algortihm	Collatz Algorithm.	number
combination(number,rep)	math	Calculates simple combination.	number
concat(...arrs)	algorithm	Concatenates into a single array.	arr
countPrimeFactors(n)	math	A function to count all prime factors of a given number.	number
countVowels(str)	string	Count the number of vowels in a string.	number
degToRad(deg)	math	Convert degrees to radians.	number
differenceBetweenDates(date1, date2)	math	Simple division function which returns an array of quotient & remainder.	array
division(dividend, divisor)	math	Simple division function which returns an array of quotient & remainder.	array
doublefactorial(n)	math	Print semi-factorial or double factorial of number using the iterative approach.	number
escape(str)	string	Escape characters from string	string
euclideanDistance(initial, final)	math	Calculates the distance between two points in any plane. initial takes an array of initial points & final takes an array of final points.	number
evenOrOdd(number)	math	Number is even or odd	boolean
factorialRecursive(n)	math	Print factorial of a number using recursive function approach.	number
factorialIterative(n)	math	Print factorial of a number using iterative approach.	number
factorialOneLine(n)	math	Print factorial of a number using a ternary operator.	number
factCountTrailingZeroes(n)	math	Print the count of trailing zeroes in n!.	number
fibRecursion(n)	math	Print nth fibonacci number using recursion.	number
fibDynamic(n)	math	Print nth fibonacci number using dynamic programming approach.	number
filter(arr, elem)	string	Filter out an element from an array	array
filterFalsy(arr)	string	Filter out falsy values from an array	array
fisherYates(arr)	math	Shuffle an array using the Fisher Yates Algorithm using a while loop.	array
fizzBuzz(n)	algorithm	FizzBuzz Algorithm: most famous asked question.	string
flatten(arr, givenArr)	algorithm	Flatten/Merge two arrays.	array
gcd(numb1, numb2)	math	Calculate the greatest common divisor among the two numbers using Euclideans algorithm.	number
generateHexColor()	string	Generate random hex color.	string
generateRGBColor()	string	Generate random RGB color.	string
guid(len)	string	Generate a Global Unique Identifier	string
hammingDistance(number1, number2)	math	Calculate hamming distance.	number
hasAtleastOneUpperCaseLetter(str)	string	String has atleast one upper-cased letter.	boolean
hasAtleastOneLowerCaseLetter(str)	string	String has atleast one lower-cased letter.	boolean
hexToRgb(hex)	string	Converts hex color to RGB.	array
humanizeNumber(num)	string	Humanize a number.	string
insertionSort(arr)	algorithm	Sort an array using the insertion sort technique.	array
isASCII(str)	string	String contains ASCII characters	boolean
isBool(str)	string	String contains true or false	boolean
isDataURI(str)	string	String is a data uri format.	boolean
isEmpty(str)	string	String is empty.	boolean
isEndWith(str, target)	string	String ends with target.	boolean
isEquals(str, elem)	string	Compares the two strings entered.	boolean
isHexaDecimal(str)	string	String is hexadecimal.	boolean
isHexColor(str)	string	String is a hex color.	boolean
isIPAddress(str)	string	String is an IP address.	boolean
isLowerCase(str)	string	String is all lower-cased.	boolean
isMACAddress(str)	string	String is a MAC Address.	boolean
isMD5(str)	string	String is a a MD5 type.	boolean
initials(str)	string	Get the initials of a persons name.	string
ISO8601WeekNumber(dateObj)	string	Get ISO-8601 week number of a year.	number
isPalindrome(str)	string	String is a palindrome.	boolean
isUpperCase(str)	string	String is all upper-cased.	boolean
isValidEmail(str)	string	String is a valid email id.	boolean
kebabCase(str)	string	to Kebab Case.	string
lcm(arr)	math	Calculate LCM of an array of numbers	number
linearSearch(arr, elem)	algorithm	Search an element using linear search technique	number(position)
maxOrMin(arr, task)	math	Get maximum or minimum of an array	number
median(arr)	math	Calculate median of a sorted number array	number
modularExponential(base, power, mod)	algorithm	Modular Exponential Algorithm	number
nthRoot(number, n)	math	Calculates the nth root of a positive number	number
nthLargest(arr, nth)	algorithm	Find the nth largest number from an unsorted array	number
permutation(num,rep)	math	Calculates simple permutation.	number
pythagorasDistance(arg1, arg2)	math	Calculate the pythogorean distance if arg1 and arg2 are 2 sides of a right-angled triangle.	number
radToDeg(rad)	math	Convert radians to degrees	number
remove(arr)	algorithm	Remove an element from an array	arr
removeTags(str)	string	Remove tags from an HTML statement	string
reverse(arr)	algorithm	Reverse an array	arr
rgbToHex(red,green,blue)	string	RGB to Hex format	string
romanize(num)	string	Romanize a number	string
secureEmail(str)	string	Secures your email using asterisks	string
securePassword(str)	string	Secure password using astrisks	string
segregate(arr)	algorithm	Segregate 0's and 1's in an array	array
selectionSort(arr)	algorithm	Sort an array using the selection sort technique	arr
slopeOfALine(arg)	math	Calculates the slope of a line using points and angle of inclination. arg takes angle of inclination or an array of initial points and final points. Example arg = 60 degrees or [x0,y0,x1,y1]	number
snakeCase(str)	string	to Snake Case	string
sortChar(str)	string	Sort string characters in alphabetical order	string
splitName(str)	string	Return the first name and the last name of a person's name.	array
stringHammingDistance(str1, str2)	string	String Hamming Distance	number
subtract(firstNum, secondNum)	math	Subtract a number from another	number
sumOfArray(arr)	math	Addition of all the integers in an array	number
thousandSeperator(num)	string	Seperate thousands using commas	number
truncate(str,pos)	string	Truncate a string at provided position	string
uuid()	string	Generate a UUID i.e universally unique identifier.	number
zeroFill(number, len)	string	Zerofill a number to the given length.	number

About

The project is a continuation to a package previously owned by me named okay-string. I thought of renaming it to functions & learn more by actually practicing functions. That's how functions.js was created.😍

FAQ

Here are some solutions to frequently asked questions:

Q. How to use ?

Take a look over here.

Q. Another lodash or underscore ?

These two libraries are industry standards & are widely used. They have a ton of great, useful functions to use in a project. There is a difference. functions.js was created to learn predefined methods and make something out of it by creating a new method. So i think there is no comparison between this & the other two libraries.

Q. How do i contribute ?

Read the guidelines mentioned here

License

The project is licensed under MIT