返回对象数组的逗号分隔值的简单方法

Question

I have an object that looks like this:

{
  "id": "123",
   "members": [
     { "id": 1, "name": "Andrew" },
     { "id": 2, "name": "Jim" }
   ]
}

I'd like a method to return a string of member names: "Andrew, Jim" .

As opposed to iterating through the member list and adding them to an array, is there a way to accomplish this cleanly in a single line (maybe underscore.js)?

Answer 1

members is Array of Objects , first you need to create Array with names - for this case you can use .map and then convert this Array to String - to do that you can use .join

 var data = { "id": "123", "members": [ { "id": 1, "name": "Andrew" }, { "id": 2, "name": "Jim" } ] }; var result = data.members.map(function (e) { return e.name; }).join(', '); console.log(result); 

Answer 2

something like

var arr = {
  "id": "123",
   "members": [
     { "id": 1, "name": "Andrew" },
     { "id": 2, "name": "Jim" }
   ]
};
 console.log( arr.members.reduce( function(x,y){ return "\"" + x.name + "\", \"" + y.name + "\"" } ) );