Question

How to truncate a number from left in Node.js

Answer 1

function truncate_left(num) {
    const total = parseInt(Math.log10(num));
     
    const first_digit = parseInt(num / parseInt(Math.pow(10,(total))));
 
    return num - first_digit * parseInt(Math.pow(10,(total)));
}
 
const num = 7483;
 
console.log(truncate_left(num));
 
 
 
 
/*
run:
 
483
 
*/

 

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