计算数组元素的总和 ​

import { getTotal } from 'warbler-js';
const result = getTotal(arr);

const getTotal = (arr) => arr.reduce((pre, cur) => pre + cur, 0);

import { getTotal } from 'warbler-js';
const ages = [1, 3, 5, 7, 8];
const result = getTotal(ages);
console.log(result); //=> 24