We are required to write a JavaScript function that takes in a number as the first and the only argument. The function should count and return the number of digits present in the number that completely divide the number.
For example −
If the input number is −
const num = 148;
Then the output should be −
const output = 2;
because 148 is exactly divisible by 1 and 4 but not 8.
Example
The code for this will be −
const num = 148; const countDividingDigits = (num = 1) => { let count = 0; const numStr = String(num); for(let i = 0; i < numStr.length; i++){ const curr = +numStr[i]; if(num % curr === 0){ count++; }; }; return count; }; console.log(countDividingDigits(num));
Output
And the output in the console will be −
2