find.js

function find(needle, heystack) {
  let returnValue = false;
  let indexNeedle = 0;
  heystack.split("").forEach(element => {
    if (needle[indexNeedle] === element) {
      indexNeedle += 1;
      if (indexNeedle === needle.length) {
        return false; // break free the cycle
      }
    }
  });
  if (indexNeedle === needle.length) {
    returnValue = true;
  }
  return returnValue;
}

console.log(
  find("ale", "appleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
); // true
console.log(find("ael", "apple")); // false