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javascript remove uniques from array Code Example
javascript find unique values in array 
// usage example:
var myArray = ['a', 1, 'a', 2, '1'];
var unique = myArray.filter((v, i, a) => a.indexOf(v) === i); 

// unique is ['a', 1, 2, '1']
Source: stackoverflow.com
javascript remove uniques from array 
function getNotUnique(array) {
    var map = new Map();
    array.forEach(a => map.set(a, (map.get(a) || 0) + 1));
    return array.filter(a => map.get(a) > 1);
}

console.log(getNotUnique([1, 2, 2, 4, 4])); //[2, 2, 4, 4]
console.log(getNotUnique([1, 2, 3] )); //[]
Source: stackoverflow.com



Javascript

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Type:
 Code Example
Category:
 Coding
Sub Category:
 Code Example
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