Javascript Array Key & Value Selecting

Question

So, I'm saving a obj like

var user = {"username": username, "info": info};

The thing is, this will be saved in an array, if I want to access ONLY that user how would I go about doing that? I'm usering array.push to add it to an array.

?? If the object is in an array, like var a = [user]; then a[0] gives you a reference to the object. — Pointy
– Pointy, Commented Aug 9, 2016 at 14:14
What do you mean "only that user"? If it's in an array, you can get it by the index like this users[index]. — Sky
– Sky, Commented Aug 9, 2016 at 14:17
Needs more explanation. You can filter arrays as well; eg. if you only have a username and not the index of that object in the array. — Shilly
– Shilly, Commented Aug 9, 2016 at 14:22

Sebastian Sebald · Accepted Answer · 2016-08-09 14:38:05Z

3

You can either use Array.find or Array.filter.

var users = [
  {"username": "Bob", "info": "..."},
  {"username": "Alice", "info": "..."}
];

function getUserByName( name ) {
  var result = users.filter(function (u) {
    return u.username === name;
  });
  return result.length ? result[0] : null;
} 

console.log(getUserByName("Bob"));
console.log(getUserByName("Unkown"));

Note: The above snippet does not take duplicates usernames in account. It will return the first one it finds.

edited Aug 9, 2016 at 14:38

answered Aug 9, 2016 at 14:23

Sebastian Sebald

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