JavaScript数组方法: 使用 filter, map, reduce 获取数据总和

const getResult = (ary) => { return ary .filter(item => item.a > 2) .map(item => item.a * 2) .reduce((acc, cur) => acc + cur, 0); }

const ary = [{a: 6}, {a: 1}, {a: 5}, {a: 2}]; console.log(getResult(ary)); // 输出 256