swiftly-tools/src/number/index.js

A complete tool to shorten code and speed up your coding, all in one

module.exports.number = {
    /** 
   *@param max Max number
   *@return Random number 
   */
    generateRandomDigitsInRangeOf(max = 100000) {
        return Math.floor(Math.random() * max) + 1
    },
    /** 
*@param DIGITS_LENGTH 
*@return Random number with selected length
*/
    generateRandomDigits(DIGITS_LENGTH = 6) {

        const add = 1
        let max = 12 - add // 12 is the min safe number Math.random() can generate without it starting to pad the end with zeros.
        if (DIGITS_LENGTH > max) {
            return generateRandomDigits(max) + generateRandomDigits(DIGITS_LENGTH - max)
        }
        max = Math.pow(10, DIGITS_LENGTH + add)
        const min = max / 10 // Math.pow(10, n) basically
        const number = Math.floor(Math.random() * (max - min + 1)) + min

        return ('' + number).substring(add)

    }
}