Replacing dots with dashes in a string using JavaScript

Problem

We are required to write a JavaScript function that takes in a string and replaces all appearances of dots(.) in it with dashes(-).

input

const str = 'this.is.an.example.string';

Output

const output = 'this-is-an-example-string';

All appearances of dots(.) in string str are replaced with dash(-)

Example

Following is the code −

const str = 'this.is.an.example.string';
const replaceDots = (str = '') => {
   let res = "";
   const { length: len } = str;
   for (let i = 0; i < len; i++) {
      const el = str[i];
      if(el === '.'){
         res += '-';
      }else{
         res += el;
      };
   };
   return res;
};
console.log(replaceDots(str));

Code Explanation

We iterated through the string str and checked if the current element is a dot, we added a dash in the res string otherwise we added the current element.

Output

this-is-an-example-string