一、数组排序
const arr = [1, 11,22,2,3,33]
// 升序
arr.sort(function(a, b) {
    return a - b
})
// 降序
arr.sort(function(a, b) {
    return b - a
})

二、数组对象排序
const arrObj = [
    {
        name: '张三',
        age: 25
    },
    {
        name: '李四',
        age: 30
    },
    {
        name: '王五',
        age: 28
    }
]
// 升序
function ascending(age) {
    return function(a, b) {
        let val1 = a[age]
        let val2 = b[age]
        return val1 - val2
    }
}
console.log(arrObj.sort(ascending('age')))
// 降序
function descending(age) {
    return function(a, b ) {
        let val1 = a[age]
        let val2 = b[age]
        return val2 - val1
    }
}
console.log(arrObj.sort(descending('age')))