Convert to any base from base10. Returns the result into an array which you can later process further or user Array.join in order to get the final based number

toBaseConverter.js

function toBase(number, base) {
    if (base <2) {
        throw new Error("Base has to be greater than 2");
    }
    var basedNumberArray = [];
    var divider = Math.floor(number / base);
    var basedNumber = number % base;
    var basedCode = getAsciiCap(basedNumber);
    
    basedNumberArray.push(basedCode || basedNumber);
    while (divider != 0) {
        basedNumber = divider % base;
        basedCode = getAsciiCap(basedNumber);
        basedNumberArray.push(basedCode || basedNumber);
        divider = Math.floor(divider / base);
    }
    return basedNumberArray.reverse();
}

function getAsciiCap(aNumber) {
    var asciiCode = '';
    var asciiOffset = aNumber - 10;
    while(asciiOffset>=0) {
        let asciiCapsBase = 65;
        let asciiCapsTop = 95;
        let ascii = asciiOffset + asciiCapsBase;
        if (ascii > asciiCapsTop) {
            ascii = asciiCapsTop;
            asciiOffset -= asciiCapsTop - asciiCapsBase
        } else {
            asciiOffset = -1;
        }
        asciiCode += String.fromCharCode(ascii);
    }
    return asciiCode;
}

Convert to any base from base10. Returns the result into an array which you can later process further or user Array.join in order to get the final based number