Comments (4)
@18101876465
arr=arr.push(item); //此时的arr为数组追加条目后的长度,并不是一个数组,自然没有shift方法。
说明你对数组的常用方法和返回值没有搞清楚,建议多练习。
function queue(arr, item) {
// Your code here
arr.push(item); // 入队
var result = arr.shift(); // 出队
return result; // 返回结果
}
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谢谢你
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一语惊醒梦中人,多谢
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这貌似是FCC中文社区的创始人,666
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