javascript - 排序值不在我在 map 中使用排序的地方

Question

我试过下面的代码变量数据 =

[{"name":"ramu","id":"719","gmail":"ramu@gmail.com","ph":988989898,"points":36},
        {"name":"ravi","id":"445","gmail":"ravi@gmail.com","ph":4554545454,"points":122},
        {"name":"karthik","id":"866","gmail":"karthik@gmail.com","ph":2332233232,"points":25}];     
var names = data.map(s=>s.name.sort());
console.log(names);

错误:TypeError:s.name.sort 不是函数。

但预期输出是 ["karthik","ramu", "ravi"]

Answer 1

尝试

var names = data.map(s=>s.name).sort(); //just move the sort out

演示

var data = [{
    "name": "ramu",
    "id": "719",
    "gmail": "ramu@gmail.com",
    "ph": 988989898,
    "points": 36
  },
  {
    "name": "ravi",
    "id": "445",
    "gmail": "ravi@gmail.com",
    "ph": 4554545454,
    "points": 122
  },
  {
    "name": "karthik",
    "id": "866",
    "gmail": "karthik@gmail.com",
    "ph": 2332233232,
    "points": 25
  }
];
//var names = data.map(s=>s.name).sort(); //just move the sort out
var names = data.map(s => s.name).sort((a, b) => a.localeCompare(b)); //used localeCompare instead of simple sort

console.log(names);