find longest string javascript code example

Example 1: find length of longest string in array javascript

const findLongest = words => Math.max(...(words.map(el => el.length)));

// Example
findLongest(['always','look','on','the','bright','side','of','life']);  // 6

Example 2: javascript find the longest word in a string

function findLongestWordLength(str) {
    let words = str.split(' ');
    let maxLength = 0;
  
    for (let i = 0; i < words.length; i++) {
      if (words[i].length > maxLength) {
        maxLength = words[i].length;
      }
    }
    return maxLength;
  }
  
  
findLongestWordLength("The quick brown fox jumped over the lazy dog");

// 6