JSFiddle - React, Tailwind, and code Playground

by Dwza

HTML

<div id="output"></div>

JavaScript

let arr = ['K','e','v','i','n'];
let str1 = '';
arr.every(function(buchstabe){
	str1 = str1 + buchstabe;
  if(buchstabe === 'i') return false;
  return true;
});

arr.some(function(buchstabe){
	str1 = str1 + buchstabe;
  
});

document.getElementById('output').innerHTML = str;