使用 JavaScript 从对象数组中查找平均年龄
问题
我们需要编写一个 JavaScript 函数,该函数采用一个包含有关某些人的数据。:
我们的函数应该简单地找到对于那些人,这些人的年龄属性的平均值
示例
以下是代码 -
const people = [ { fName: 'Ashish', age: 23 }, { fName: 'Ajay', age: 21 }, { fName: 'Arvind', age: 26 }, { fName: 'Mahesh', age: 28 }, { fName: 'Jay', age: 19 }, ]; const findAverageAge = (arr = []) => { const { sum, count } = arr.reduce((acc, val) => { let { sum, count } = acc; sum += val.age; count++; return { sum, count }; }, { sum: 0, count: 0 }); return (sum / (count || 1)); }; console.log(findAverageAge(people));
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输出
23.4
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