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The toString() method can output numbers from base 2 to 36:
let myNumber = 32;
document.getElementById("demo").innerHTML =
"Decimal 32 = " + "<br><br>" +
"Hexatrigesimal (base 36): " + myNumber.toString(36) + "<br>" +
"Duotrigesimal (base 32): " + myNumber.toString(32) + "<br>" +
"Hexadecimal (base 16): " + myNumber.toString(16) + "<br>" +
"Duodecimal (base 12): " + myNumber.toString(12) + "<br>" +
"Decimal (base 10): " + myNumber.toString(10) + "<br>" +
"Octal (base 8): " + myNumber.toString(8) + "<br>" +
"Binary (base 2): " + myNumber.toString(2);