类型错误：无效的 Array.prototype.sort 参数

当 Array.prototype.sort() 的参数既不是 undefined 也不是比较其操作数的函数时，就会发生 JavaScript 异常 "无效的 Array.prototype.sort 参数"。

¥The JavaScript exception "invalid Array.prototype.sort argument" occurs when the argument of Array.prototype.sort() isn't either undefined or a function which compares its operands.

信息

¥Message

TypeError: The comparison function must be either a function or undefined (V8-based)
TypeError: invalid Array.prototype.sort argument (Firefox)
TypeError: Array.prototype.sort requires the comparator argument to be a function or undefined (Safari)

错误类型

¥Error type

TypeError

什么地方出了错？

¥What went wrong?

Array.prototype.sort() 的参数应该是 undefined 或比较其操作数的函数。

¥The argument of Array.prototype.sort() is expected to be either undefined or a function which compares its operands.

示例

¥Examples

无效案例

¥Invalid cases

js
[1, 3, 2].sort(5); // TypeError

有效案例

¥Valid cases

js
[1, 3, 2].sort(); // [1, 2, 3]
[1, 3, 2].sort((a, b) => a - b); // [1, 2, 3]

也可以看看

¥See also