JavaScript sorts Chinese codes according to pinyin_javascript skills

Today, I used the code to sort Chinese characters according to pinyin. After consulting the experts in the group, I got the following code:

var arr = ["张三","李四","王五","阿三"]; 
document.write(arr+"<br/>"); 
arr.sort(function(a,b){ 
return a.localeCompare(b); 
}); 
document.write(arr);