利用 reduce 计算数组最大值

对象数组 [{},{}]

let arr = [
   { name: 'aaa', value: 12 },
   { name: 'bbb', value: 15 },
   { name: 'ccc', value: 11 },
 ]
 let max = arr.reduce((pre,cur) => {
   return pre > cur.value ? pre : cur.value
 },0)
 console.log(max) // 15

数组 [1,2,3]

let arr2 = [12, 15, 11]
let max2 = arr2.reduce((pre,cur) => {
  return pre > cur ? pre : cur
},0)
console.log(max2) // 15