Summing numbers from a string - JavaScript

We are required to write a JavaScript function that takes in a string that contains some one-digit numbers in between and the function should return the sum of all the numbers present in the string.

Let’s say the following is our string with numbers −

const str = 'gdf5jhhj3hbj4hbj3jbb4bbjj3jb5bjjb5bj3';

Example

Let's write the code for this −

const str = 'gdf5jhhj3hbj4hbj3jbb4bbjj3jb5bjjb5bj3';
const sumStringNum = str => {
   const strArr = str.split("");
   let res = 0;
   for(let i = 0; i < strArr.length; i++){
      if(+strArr[i]){
         res += +strArr[i];
      };
   };
   return res;
};
console.log(sumStringNum(str));

Output

The output in the console −

35