How can I get a unique array based on object property using underscore

Question

I have an array of objects and I want to get a new array from it that is unique based only on a single property, is there a simple way to achieve this?

Eg.

Answer 1

In case you need pure JavaScript solution:

var uniqueProperties = {};

var notUniqueArray = [ { id: 1, name: 'bob' }, { id: 1, name: 'bill' }, { id: 1, name: 'bill' } ];


for(var object in notUniqueArray){
   uniqueProperties[notUniqueArray[object]['name']] = notUniqueArray[object]['id'];
}

var uniqiueArray = [];

for(var uniqueName in uniqueProperties){
   uniqiueArray.push(
     {id:uniqueProperties[uniqueName],name:uniqueName});
}

//uniqiueArray