Question

How to convert an array of digits to a number in JavaScript

Answer 1

function IntArrayToIntNumber(arr) {
    const size = arr.length;
    let n = 0;
 
    for (let i = 0; i < size; i++) {
        n = n * 10 + arr[i];
    }
 
    return n;
}
 
const arr = [4, 6, 3, 9, 1, 2];
 
console.log(IntArrayToIntNumber(arr));
 
 
 
 
/*
run:
 
463912
 
*/

 

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