Finding the longest string in an array in JavaScript

We are required to write a JavaScript function that takes in an array of strings. Our function should iterate through the array and find and return the longest string from the array.

Our function should do this without changing the content of the input array.

Example

The code for this will be −

const arr = ["aaaa", "aa", "aa", "aaaaa", "acc", "aaaaaaaa"];
const findLargest = (arr = []) => {
   if(!arr?.length){
      return '';
   };
   let res = '';
   res = arr.reduce((acc, val) => {
      return acc.length >= val.length ? acc : val;
   });
   return res;
};
console.log(findLargest(arr));

Output

And the output in the console will be −

aaaaaaaa

AmitDiwan

Updated on 24-Nov-2020 10:20:17

• Related Questions & Answers
• Finding all the longest strings from an array in JavaScript
• Finding the longest word in a string in JavaScript
• Finding the longest substring uncommon in array in JavaScript
• Finding unique string in an array in JavaScript
• Get the longest and shortest string in an array JavaScript
• Finding the only unique string in an array using JavaScript
• Finding the longest valid parentheses JavaScript
• Finding the length of longest vowel substring in a string using JavaScript
• Finding longest consecutive joins in JavaScript
• Finding the rotation of an array in JavaScript
• Finding the mid of an array in JavaScript
• Finding the longest consecutive appearance of a character in another string using JavaScript
• Find longest string in array (excluding spaces) JavaScript
• Finding the longest "uncommon" sequence in JavaScript
• Finding the first redundant element in an array - JavaScript