在JavaScript字符串中返回哈希和加号的数量

function countHashAndPlus(str) {
  let hashCount = 0;
  let plusCount = 0;

  for (let i = 0; i < str.length; i++) {
    if (str[i] === '#') {
      hashCount++;
    } else if (str[i] === '+') {
      plusCount++;
    }
  }

  return {
    hashCount,
    plusCount
  };
}

const str = 'This is a #sample# string with +some+ hash and plus signs.';
const counts = countHashAndPlus(str);

console.log('Hash count:', counts.hashCount);
console.log('Plus count:', counts.plusCount);