数组中含有什么元素会使localeCompare（）失效？

Question

一直对localeCompare（）函数不慎了解，看文档也只说是“按当地规则排序”，我今天专门测试了一下，发现报错，如下代码：

var a =["1","a","b","vb","ds","2","中华","大力","simple","2","22","32",1,2]
		var b = a.sort(function (o,p) {
			return o.localeCompare(p);
		})
		
		console.log(b);

把变量a的最后一个对象2删除，就好使了，求原因。

Answer 1

数字没有localeCompare方法