JSFiddle - React, Tailwind, and code Playground

by Bhavik Bamania

JavaScript

// Count each character in a sentence
const str = "Hello World";

// function countChars() {
//   let freq = new Map();
//   for(let char of str) {
//     if(freq.has(char)) {
//       freq[char] = (char || 0) + 1;
//     }
//     freq[char] = 1;
//   }
//   console.log(freq)
// }

function countChars() {
  let freq = {};
  for(let char of str) {
    freq[char] = (freq[char] || 0) + 1;
  }
  console.log(freq);
}

countChars();