js数组中最大值

const arr = [3, 7, 2, 9, 5];
const max = Math.max(...arr);
console.log(max); // 输出: 9

const arr = [3, 7, 2, 9, 5];
const max = arr.reduce((a, b) => (a > b ? a : b), arr[0]);
console.log(max); // 输出: 9

const arr = [3, 7, 2, 9, 5];
let max = arr[0];
for (let i = 1; i < arr.length; i++) {
  if (arr[i] > max) {
    max = arr[i];
  }
}
console.log(max); // 输出: 9

const arr = [3, 7, 2, 9, 5];
let max = arr[0];
arr.forEach(num => {
  if (num > max) {
    max = num;
  }
});
console.log(max); // 输出: 9

const arr = [3, 7, 2, 9, 5];
const sortedArr = arr.slice().sort((a, b) => a - b);
const max = sortedArr[sortedArr.length - 1];
console.log(max); // 输出: 9