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JavaScript

Posted by M Khan
M Khan
7,024 Points

Can i get a precise explanation of this code block. pls 

var x = 125;
var prod = 0;
while (x > 0){
  prod += x % 10;
  x = (x-x % 10) /10;
}

document.write(prod);

1 Answer

Steven Parker
Steven Parker
243,656 Points
Steven Parker
Steven Parker
243,656 Points

This code just adds up all the digits of the value in "x" as individual numbers.

while (x > 0){         // repeat for each digit of "x"
  prod += x % 10;      // add the remainder of dividing x by 10 (the last digit) to "prod"
  x = (x-x % 10) /10;  // remove that remainder, then divide by 10
}

So for 125, 1 + 2 + 5 = 8.