Question

38

How to split a number into its digits in Javascript?

rated 0 times [ 45] [ 7] / answers: 1 / hits: 22444 / 9 Years ago, mon, may 4, 2015, 12:00:00

I want to Split a number into its digit (for example 4563 to 4 , 5 , 6 , 3 ) then addiction this digits. (for example: 4+5+6+3=18)

I can write code for 3 digit or 2 digit and ... numbers seperately but I cant write a global code for each number.

so this is my code for 2 digit numbers:

var a = 23

var b = Math.floor(a/10); // 2

var c = a-b*10; // 3

var total = b+c; // 2+3

console.log(total); // 5

and this is my code for 3 digit numbers:

var a = 456

var b = Math.floor(a/100); // 4

var c = a-b*100; // 56

var d = Math.floor(c/10); // 5

var e = c-d*10; // 6

var total = b+d+e; // 4+5+6

console.log(total); // 15

but I cant write a code to work with each number.How can I write a global code for each number?

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claudiofredye

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2 Years ago

answered 9 Years ago louiemarvinm · Accepted Answer

var num = 4563;

var sum = 0;

while(num > 0) {

  sum += num % 10;

  num = Math.floor(num / 10);

}

console.log(sum);