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number.toLocaleString("en-US", {
minimumIntegerDigits: 2,
useGrouping: false,
});
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function leftPad(number, targetLength) {
var output = number + '';
while (output.length < targetLength) {
output = '0' + output;
}
return output;
}
// Output :-
// leftPad(1, 2) // 01
// leftPad(10, 2) // 10
// leftPad(100, 2) // 100
// leftPad(1, 3) // 001
// leftPad(1, 8) // 00000001
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var numarr = [8, 32, 128]
var formatted = []
//create three numbers of different lengths
numarr.forEach(num => {
formatted.push(
num.toLocaleString('en-US', {//this is the function that formats the numbers
minimumIntegerDigits: 2, //change this to your minimum length
useGrouping: false
})
)
})
//after running this, formatted == [08, 32, 128]
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function formatToSingleDigit(number) {
if (number < 0)
number *= -1; // handling negative numbers
if (number < 10)
return number; // base case
return formatToSingleDigit(number % 10);
}
// Example usage
const number = 123456789;
const singleDigitNumber = formatToSingleDigit(number);
console.log(singleDigitNumber); // Output: 9