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凌翊CJV

#1 Created at ... [Delete] [Delete and Lock User]

arr.sort((x, y) => { return x - y; }); console.log(arr); // [1, 2, 10, 20]

阿斯拉达plus

#2 Created at ... [Delete] [Delete and Lock User]

return的是一个表达式的话，return都不需要好吧

直接 arr.sort((x, y) => x-y);

伟大的星狗

#3 Created at ... [Delete] [Delete and Lock User]

不写return结果是10,20,1,2

伟大的星狗

#4 Created at ... [Delete] [Delete and Lock User]

arr.sort((x, y) => {x-y});加了{}结果是10,20,1,2

槲寄君

#5 Created at ... [Delete] [Delete and Lock User]

楼上的你是没有运行过呢还是写错了，不加return是可以的

桀呐

#6 Created at ... [Delete] [Delete and Lock User]

因为外层有{...} 所以直接写 x-y 就相当于直接执行这一句而不是返回，返回值是undefined，所以无法进行排序。 不写return的写法是要把外层的{...}删掉，arr.sort((x, y) => x - y);这样函数体才是相当于{return x - y}

青涯白漉

#7 Created at ... [Delete] [Delete and Lock User]

我加了return之后才正确的。。。

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