数据驱动、坚持为客户提供有价值的服务和内容
let array = {} //sort 数组正序 array = [5, 4, 3, 2, 1] console.log(array.sort()) //reverse 数组倒序 array = [1, 2, 3, 4, 5] console.log(array.reverse()) //filter 数组过滤 array = [1, 5, 10, 15, 20]