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up vote -4 down vote favorite

I have following Array

var x = [
  '{"id":"item1","val":"Items"}',
  '{"id":"item1","val":"Items"}',
  '{"id":"item2","val":"Items"}',
  '{"id":"item2","val":"Items"}',
  '{"id":"item3","val":"Items"}',
  '{"id":"item2","val":"Items"}'
];

I want create unique array by id key like following:

[
  '{"id":"item1","val":"Items"}',
  '{"id":"item2","val":"Items"}',
  '{"id":"item3","val":"Items"}'
];
share|improve this question
1  
check this: stackoverflow.com/questions/19501441/… – Avnesh Shakya 20 hours ago
    
Is x an array of strings or objects ? – Hmahwish 20 hours ago
up vote 2 down vote

You can use array.filter 

var x = [
  '{"id":"item1","val":"Items"}',
  '{"id":"item1","val":"Items"}',
  '{"id":"item2","val":"Items"}',
  '{"id":"item2","val":"Items"}',
  '{"id":"item3","val":"Items"}',
  '{"id":"item2","val":"Items"}'
];

var unique = x.filter(function(elem, index, self) {
    return index == self.indexOf(elem);
})

console.log(unique);

share|improve this answer
up vote 0 down vote

If you could use jQuery:

var obj = {};
$.each(x,function(index,val){
 var temp = JSON.parse(val);
 obj[temp.id] = val;
})

var tempArray = [];

for(var i in obj){
tempArray.push(obj[i])
}

console.log(tempArray);
share|improve this answer
up vote 0 down vote

ES6 has been officially published one and half years ago, why not give it a try?

var unique = [...new Set(x)]

Set to remove the duplicates, ... to spread members in an iterable.

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