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js-util-methods

v1.0.8

Published

Javascript usefull utility functions

Downloads

4

Readme

What is this ?

Lightweight, usefull, tiny size(<4kb), javascript package for commenly used utility functions.

Installation

npm i js-util-methods

How to use ?

import { findAvg } from 'js-util-methods'

findAvg([12, 13, 14, 15, 16, 17]);
  • For static server to serve your static build folder use package with (< kb) size. ind-js-server.

  • For use in typescript projects follow the steps below.

  • Create file with name .d.ts copy and paste below code in created file.

  • declare module 'js-util-methods';

What all utility functions there ?

  • findAvg(List of numbers) => number
  • isEmpty(object | array | null | undefined) => boolean
    isEmpty({}) => true
    isEmpty([]) => true
    isEmpty({ name: 'Pujari', age: 20 }) => false
    isEmpty([1, 2, 3]) => false
  • sortBy(array, compareType, sortType) => sorted array (orderBy also can be done)
    const arr = [
        { name: 'Raj', age: 21 },
        { name: 'Tiwari', age: 20 },
        { name: 'Pujari', age: 20 },
        { name: 'Avi', age: 30 }
    ]
    sortBy(arr, 'name', 'asc') =>
        [
            { name: 'Avi', age: 30 },
            { name: 'Pujari', age: 20 },
            { name: 'Raj', age: 21 },
            { name: 'Tiwari', age: 20 }
        ]
  • uniqBy(arr, predicate) => arr
    const arr = [
        { name: 'Raj', age: 21 },
        { name: 'Tiwari', age: 20 },
        { name: 'Pujari', age: 20 }
    ]
    uniqBy(arr, 'age') =>
    [
        { name: 'Raj', age: 21 }
        { name: 'Tiwari', age: 20 }
    ]
  • groupBy(arr, property) => grouped obj
    const arr = [
        { name: 'Raj', age: 21 },
        { name: 'Tiwari', age: 20 },
        { name: 'Pujari', age: 20 }
    ]
    groupBy(arr, 'age') =>
    {
      20: [
        { name: 'Tiwari', age: 20 },
        { name: 'Pujari', age: 20 }
      ],
      21: [{ name: 'Raj', age: 21 }]
    }
  • deepCopy(obj) => deepcopied Object (Works better than JSON.parse(JSON.stringify(obj)))
    const a = {
        string: 'string',
        number: 123,
        bool: false,
        nul: null,
        date: new Date(),
        undef: undefined,
        inf: Infinity,
        re: /.*/,
    }

    const b = deepCopy(a);
    b => {
        string: 'string',
        number: 123,
        bool: false,
        nul: null,
        date: new Date(),
        undef: undefined,
        inf: Infinity,
        re: /.*/,
    }
  • deleteObjProperty(obj, property) => obj
  • isValidObjProperty(obj, property) => boolean
  • isArrHasElement(arr, element) => boolean
    isArrHasElement([12, 34, 'pujari'], 'pujari') => true
    isArrHasElement([12, 34, 'pujari'], 50) => false
  • isArrHasObject(arr, obj, predicate) => boolean
    isArrHasObject(arr, { name: 'Tiwari', age: 20 }, age) => true
    isArrHasObject(arr, { name: 'Tiwari', age: 30 }, age) => false
  • toCamelCase(string) => string
  • getPercentage(totalValue, value) => number
  • formatPriceINR(price, isDecimalRequired = true, isRSRequried = true) => string
  • getMobileFormat(valid mobile number(123 4567 890)) => string in format (+91 123 4567 890)
  • getFirstElement(list of elements) => single object
  • calculateDiscountPercentage(price, discountedPrice) => number
  • calculatePriceFromDiscount(price, discountPercent) => number
  • getDobFromAge(age in number) => DOB in Date format
  • getAgeFromDob(DOB in Date format) => age in number
  • capitalizeFirstLetter(string) => string