Finding the longest word in a string in JavaScript

We are required to write a JavaScript function that takes in a string as the only argument. The function should then iterate through the string and find and return the longest word from the string.

For example −

If the input string is −

const str = 'Coding in JavaScript is really fun';

Then the output string should be −

const output = 'JavaScript';

Example

Following is the code −

const str = 'Coding in JavaScript is really fun';
const findLongest = (str = '') => {
   const strArr = str.split(' ');
   const word = strArr.reduce((acc, val) => {
      let { length: len } = acc;
      if(val.length > len){
         acc = val;
      };
      return acc;
   }, '');
   return word;
};
console.log(findLongest(str));

Output

Following is the output on console −

JavaScript