如何在forEach循环和if语句中正确返回字符串？

let array = [1, 2, 3, 4, 5];
let result = '';

for (let i = 0; i < array.length; i++) {
  if (array[i] === 3) {
    result = '字符串';
    break;
  }
}

console.log(result); // 输出：字符串

let array = [1, 2, 3, 4, 5];
let result = '';
let found = false;

array.forEach((element) => {
  if (element === 3) {
    result = '字符串';
    found = true;
  }
});

console.log(result); // 输出：字符串

let array = [1, 2, 3, 4, 5];
let result = array.find((element) => element === 3) ? '字符串' : '';

console.log(result); // 输出：字符串