counting duplicate values javascript
var array = [1, 2, 2, 3, 3, 4, 5, 6, 2, 3, 7, 8, 5, 22, 1, 2, 511, 12, 50, 22];
console.log([...new Set(
array.filter((value, index, self) => self.indexOf(value) !== index))]
);
0
0
var input = [1, 2, 3, 1, 3, 1];
var duplicates = input.reduce(function(acc, el, i, arr) {
if (arr.indexOf(el) !== i && acc.indexOf(el) < 0) acc.push(el); return acc;
}, []);
document.write(duplicates); // = 1,3 (actual array == [1, 3])
Thank you!
0
0
0
3.83
6
var counts = {};
your_array.forEach(function(x) { counts[x] = (counts[x] || 0)+1; });
Thank you!
6
3.83
(6 Votes)
0
Are there any code examples left?
New code examples in category Javascript
Relative searches
repeated integer values in javascript
how to get duplicate values from array in javascript
find duplicate number in array javascript
duplicate values in array javascript
count similar values in array in javascript
get length of duplicates in array javascript
javascript detect array duplicate values
how to find duplicates inside an array node js
count duplciated in array js
find duplicate number in array in javascript
verification of duplicate records with javascript
javascript method to count number of repeated numbers
return duplicate array values in array javascript
how to find the number of elements repeated in array successively js
javascript count same value in array
count of dublicate elements in array js
return duplicates in array javascript
find the number of times a number is repeated in an array js
find repeated elements in array javascript
count multiple repeating value in javascript array
count duplicate in array js
how to count duplicate elements in array in javascript
how to find out how many times does the value repeated in js
find a number that repeated itself javascript
how to count duplicate values in two array javascript
how to find duplicate values in a line in JS
javascript check duplicate values in array
find out how many times a number is repeated in array js
count the same value in array javascript
count how many times elements in an array are repeated javascript
how to find how many times a number is repeated in javascript
how to find repeated elements in an array javascript
how to get duplicate values and count typescript
how to know how many times an item in array is duplicate javascript
find duplicate values array javascript
array count same values javascript
how to find the duplicate values by given value in javascript
js count duplicates in array
find duplicatenumbers in javascript
check for duplicate values in array javascript
how to find repeating numbers in an array
count number of repeated numbers in js
check if counter has duplicate values javascript
find how many duplicated in array js
how to find out repeated values in javascript
check for duplicat values js
how to count duplicates in javascript
count how many duplicates we have in array typescript
check how many duplicates we have in array typescript reduce
count duplicate in array javascript without using if else
array count all repeated values
how to count duplicate values in list javascript
count object repeat in array in javascript
of duplicates number javascript
reduce array to remove and count duplicates
counting duplicates javascript
count reacurring number in JS
get number of repeat of value in array
how to count through array with similar element js
how to count 2 items equal in an array javascript
es6 count dupes words in array
es6 count dupes in array
counting duplicate in an array
javascript array duplicate count
calculating number of same element in array javascript
know the number of repeats in the array with javascript
how to count the duplicate letter with javascript forEach
count number of same objects in array javascrtip
count number of same elements in list array javascrtip
increase count if their are duplicatesin the javascript array
count same values array and put it on an object js
count duplicates in array
javascript array count same values
count if array equals javascript
how to get how many a certain value is repeated in array js
count the number of repeating elements in an array javascript
js array count occurrences of dublicates
js count same object values
how to count a duplicate in a string and return number of time it is repeated js
how to display the count of duplicate string in javaScript
find the late occurence in array javascript
add to add a number of duplicate letter to an array javaScript
how to count if element is same
js count matching values in array
how to check how many same elements are in the array
js how to count all same element in an array
how to count duplicates in an array javascript
count identical elements in list javascript
how to count repeating strings in an array javascript
count duplicate numbers in array javascript
js count same value in array
count character repeated in array js
coiunt repeated values in 3 arrays javascript
numer of duplicates in array js
angular check repeated value length
how to find number of repeated values in array js
js, count how many elements are equal in array
find duplicate count in array javascript
how to get a certain number of duplicate from array in javascript
count same values in string javascript
js array how many duplicates
how many same elements
repeat name count js for.each
repeat name count js
javascript count repeated words in array
get number of duplicates in an array javascript
how to find a count of duplicate values of each item is repeated in an array in typescript
how to find a count of duplicated values of each item is repeated in an array in typescript
filter get number of same value javascript
how to count duplicate values in an array in javascript
count even pair of duplicates javascript
find out duplicate and its count from array in javascript
number of repeating elements in an array in javascript
javascript how much duplicates
how many times an element has been repeated in an array javascript
how to count how many time an item is repeated in an array javascript
js count number of same elements in list
count duplicate item in array nodejs
count recurring strings in array javascript es6
count recurring in array javascript
js count same values in array
count duplicates values in array
count array element with same name in typescript
duplicate id count javascript
count number of identic objects in array
js count duplicate content in array
duplicates counter in javascript
js count duplicate value in array
count number of similar objects in array javascript
counting duplicates in javascript
count duplicate in array javascript
duplicate id javascript count
function count duplicate count element that occur more than one
duplicates counter array
how to count element in an array that repeat array javascript
return count of same values in an array
count of same number in array
javascript array same value count
javascript algorithm find count of repeating values in array
count duplicate in string javascript
how to make duplicate items in array single count
get the number of bnjects with same value in array javascript
javascript count repeated numbers in array
counting duplicates js
javascript countDuplicate
count duplicate javascript
js array count duplicates
array find number of duplicate values javascript
find value count duplicate in array
counting duplicates list js
count number of duplicates in array javascript
js array count same values
all repeated same array number display javascript
duplicate array number display javascript with parameters
count repeat in map javascript
reduce to count dublicates in array
get number of duplicates js
count repeated elements in array javascript
javascript count duplicates in string
calculate repated array item count js'
count same values in array js
javascript count how many duplicates values in string
count repeated values array javascript
count duplicate items of an array
count repetitive items of an array
count matching values js
print number of times a number is repeated in an array in javascript
how to count same names in array in nodejs
react count similar values
how to get amount of equal items in an array javascript
how to check how many times a string is repeated in an array in javascript
how to count how many duplicates injs
how to find how many time an element is duplicated in javascript
array filter of javascript to check repetition
how to find the count of repeated values in array js
javascript array find duplicate elements count
typescript array count same values get number
typescript array count same values
get count of duplicated values in array javascript
count same things in an array javascript
finding to total of duplicates in an array javascript
js count repetition words in array
count repeated value in object
how to count number of duplicate value in aray javascript
javascript count same elements in array
javascript array count duplicates
get number of duplicate and unique values in array javascript
how to get the count of similar values in js array
javascript count item repeated
js count duplicate values in array
javascript count of repeating elementn in array
js count number of repeat
count same value in array javascript
count repetition in array javascript
count duplicate elements in javascript in an array
how many of the same value in array javascript
count how many times key value is same in javascript
count duplicate values in array javascript
count repeated value in array
count same elements in array js
count duplicate elements in array javascript
javascripts how many duplicates in array
how to use count the number of duplicate values in an array javascript
how to use count the number of duplicated values in an array javascript
javascript array how to count numbers of repeated elements
count non duplicate value in array javascript
javascript count repeats in array
determining number of repeats in an array js
count duplicates in array javascript
count similar values in array with key value pair
how to count duplicate values in array javascript
count same elements in array es6 javascript
count same elements in array javascript
javascript item reapeat count in array
count only one value if we are getting dublicate value in object javascript
count values same js
get count of same array values in javascript
how to count same element in array javascript
js count array duplicates
map count duplicated js
filter count duplicate js
js 2 arrays count how many equal entries
how many same elements in array javascript
js array count duplicate
count the number of duplicates javascript
count duplicates from array
count duplicates array javascript
javascript find counts duplicate
javascript count duplicate numbers in array
javascript count duplicate elements in array
count same values in array javascript
How to count duplicate value in an array
javascript how to get number of the same value
javascript count same values in object
get count of duplicate values in array javascript
count duplicates javascript
count if a value repeats in an array javascript
count if a value repeats in a array javascript
count number of same elements in array javascript
array count duplicates javascript
count same values in 2 arrays javascript
get the total of all values and don't count duplicates in array javascript
javascript count duplicates in array
count repeated elements in array js
total of repeative in array js
how to count duplicate elements in an array in javascript
javascript count duplicates in array of objects
how count the same numbers of element in array javascript
letter count javascript duplicates in array
js count repeats in an arrat
count repeated objects in array javascript
count equal elements in array javascript
counting duplicate values javascript
