How to get unique objects from objects array in javascript

Question

I have an array of objects that looks like the image below. Is there a way by which I can have an array that contains unique objects with respect to id ? We can

Answer 1

Try this: just add to a new object using id as the key

var arr = [{id:'123', text: 'a'}, {id:'234', text: 'b'}, {id:'123', text: 'c'}]; 
var map = new Object();
for(var i in arr){ map[arr[i].id] = arr[i]; }
var newArr = [];
for(var i in map){ newArr.push(map[i]); }

newArr shall contain the 2nd and 3rd object.