Getting unique elements from the array?

Question

Anonymous · Accepted Answer

Using Set merthod with spread operator

Brijesh Patil · Answer

var arr = [1,4,7,3,1,7,9,5];
var uniqueArray = [...new Set(arr)]
console.log(uniqueArray);

Q: Getting unique elements from the array? · Answer

A: We can use the native filter method of an Array in the following way to get an array with unique values:

Example: 
--------
function onlyUnique(value, index, self) {
  return self.indexOf(value) === index;
}

// usage example:
var a = ['a', 1, 'a', 2, '1'];
var unique = a.filter(onlyUnique);

console.log(unique); // ['a', 1, 2, '1']




Output: 
-------
[
  "a",
  1,
  2,
  "1"
]

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