callback without duplicates javascript

Clean Constrictor answered on January 22, 2020 Popularity 6/10 Helpfulness 3/10

answer callback without duplicates javascript

related array without duplicates js

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callback without duplicates javascript

Comment

function myFunction(myArray, callBack){

 var unique = myArray.filter(function(item, pos) {
   //validates whether the first occurrence of current item in array
   // equals the current position of the item (only return those items) 
   return myArray.indexOf(item) == pos;
 });

 //wrap your result and pass to callBack function 
 callBack(unique);

}

Popularity 6/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: callback javascript

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Contributed on Jan 22 2020

Clean Constrictor

0 Answers Avg Quality 2/10

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array without duplicates js

Comment

const Array = [0, 3, 2, 5, 6, 8, 23, 9, 4, 2, 1, 2, 9, 6, 4, 1, 7, -1, -5, 23, 6, 2, 35, 6,
  3, 32, 9, 4, 2, 1, 2, 9, 6, 4, 1, 7, 1, 2, 9, 6, 4, 1, 7, -1, -5, 23]

// 1. filter
Array.filter((item, index) => {
  return arr.indexOf(item) === index;
});

// 2. set
const newArray = [...new Set(Array)]
console.log(newArray)
// OR //
const newArray = Array.from(new Set(arr))
console.log(newArray)

// 3. reduce
Array.reduce((unique, item) => {
  if (unique.includes(item)) {
    return unique;
  } else return [...unique, item], [];
});

Popularity 9/10 Helpfulness 5/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Aug 06 2022

Anton Grigoriev

0 Answers Avg Quality 2/10

javascript remove duplicates

Comment

uniq = [...new Set(array)];

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Dec 11 2021

Alby7503

0 Answers Avg Quality 2/10

callback without duplicates javascript

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