ibeautiful
2021-10-21 17:01:02
我接到了一項(xiàng)任務(wù),我一定是遺漏了什么。提供的代碼不是原始問(wèn)題,而是相似的。我必須計(jì)算陣列中有多少人年齡在 16 歲或以上。我玩過(guò)它,但我無(wú)法解決。請(qǐng),有人可以解釋我做錯(cuò)了什么嗎?在任務(wù)中,我得到了一組對(duì)象:var people = [{name:'Emma', age:15},{name:'Matt', age: 16}, {name:'Janet', age:17}]我需要完成一個(gè)函數(shù)來(lái)計(jì)算有多少人年滿(mǎn) 16 歲。給出了函數(shù)的開(kāi)始(即function correctAge(people){ //Complete })“示例代碼”是我一直在玩的一些骨架代碼?!安徽_的嘗試”是我的嘗試,它是我不斷返回的代碼,或者它的變體也是正確的......請(qǐng)幫忙錯(cuò)誤的嘗試:var people = [ {name: "Emma", age: 15}, {name: "Matt", age: 16}, {name: "Tom", age: 17}];function correctAge(array) { // Complete the function to return how many people are age 16+ var count = 0; for (let i = 0; i < array.length; i++) { var obj = array.length[i]; for (prop in obj) { if (prop[obj] >= 16) { count++; } } return count; }}console.log(correctAge(people));示例代碼:var people = [ {name: "Emma", age: 15}, {name: "Matt", age: 16}, {name: "Tom", age: 17}];function correctAge(people) { // Complete the function to return how many people are age 16+}
3 回答

紅顏莎娜
TA貢獻(xiàn)1842條經(jīng)驗(yàn) 獲得超13個(gè)贊
試試這個(gè)你會(huì)得到你的結(jié)果;
var people = [{name:'Emma', age:15},{name:'Matt', age: 16}, {name:'Janet', age:17}];
const correctAge = function(age) {
return people.filter(x => x.age < age).length;
}
console.log(correctAge(16));

慕姐4208626
TA貢獻(xiàn)1852條經(jīng)驗(yàn) 獲得超7個(gè)贊
Array.reduce()是一個(gè)優(yōu)雅的解決方案 -
function correctAge(array) {
return array.reduce((total, person) => {
return person.age >= 16 ? ++total : total;
}, 0)
}
對(duì)于問(wèn)題中的示例,這將返回值 2。
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