Compact representation of a large number in JavaScript ( #shorts )

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Compact representation of a large number in JavaScript

To generate a compact representation of a large number in JavaScript, you can use the following function

function getCompactNumber(numbr) {
const units = ['', 'K', 'M', 'B', 'T'];
let unitIndex = 0;
while (numbr ≥ 1000 && unitIndex < units.length - 1) {
numbr /= 1000;
unitIndex++;
}
return numbr.toFixed(1).replace(/\.0$/, '') + units[unitIndex];
}

getCompactNumber(1000); // "1K"
getCompactNumber(1200); // "1.2K"
getCompactNumber(1200000); // "1.2M"
getCompactNumber(1200000000); // "1.2B"

getCompactNumber function takes a number as an argument and returns a string representing the number in a compact format. The function uses an array of units to check which unit to use for the compact representation, and then divides the number by 1000 until it is less than 1000 or the largest unit has been used. The number which will be returned as result, is then formatted to one decimal place and any trailing ".0" is removed.

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