fixed-decimal-point.js

Home   »   fixed-decimal-point.js

Truncate a number to a fixed decimal point
Using the Math.pow() method, we can truncate a number to a certain decimal point that we provide in the function.

Ex.

const toFixed = (n, fixed) => ~~(Math.pow(10, fixed) * n) / Math.pow(10, fixed);
// Examples
toFixed(25.198726354, 1);       // 25.1
toFixed(25.198726354, 2);       // 25.19
toFixed(25.198726354, 3);       // 25.198
toFixed(25.198726354, 4);       // 25.1987
toFixed(25.198726354, 5);       // 25.19872
toFixed(25.198726354, 6);       // 25.198726

Reference and further reading
https://medium.com/dailyjs/13-javascript-one-liners-thatll-make-you-look-like-a-pro-29a27b6f51cb

Leave a Reply

Your email address will not be published. Required fields are marked *