Remove duplicate array es6

Js delete duplicates from array

const names = ['John', 'Paul', 'George', 'Ringo', 'John'];

let unique = [...new Set(names)];
console.log(unique); // 'John', 'Paul', 'George', 'Ringo'

Js delete duplicates from array

const names = ['John', 'Paul', 'George', 'Ringo', 'John'];

function removeDups(names) {
  let unique = {};
  names.forEach(function(i) {
    if(!unique[i]) {
      unique[i] = true;
    }
  });
  return Object.keys(unique);
}

removeDups(names); // // 'John', 'Paul', 'George', 'Ringo'

Remove duplicate array es6

let a = [10,20,30,10,30];
let b = [... new Set(a)];
console.log(b);

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

Remove duplicate array es6

let a = [10,20,30,10,30];
let b = a.filter((item,index) => a.indexOf(item) === index);
console.log(b);

-1

Remove duplicate array es6

let a = [10,20,30,50,30];
let b = a.reduce((unique,item) => unique.includes(item) ? unique: [... unique, item] ,[]); 
console.log(b);

-1

Similar codes

5 votes174 views1 answer
Show scrollbar only when scrolling
CSS
33 votes207 views6 answers
Linear gradient css
CSS
0 vote250 views1 answer
! [remote rejected] master -> master (Working directory has unstaged changes)
CSS
0 vote239 views2 answers
Facebook box-shadow css
CSS
9 votes238 views2 answers
Bootstrap cheat sheet
CSS Bootstrap
0 vote223 views1 answer
Laravel enum float
CSS
0 vote230 views1 answer
Css background templates
CSS
0 vote284 views1 answer
Bootstrap progress bar animation not working
CSS Bootstrap
0 vote226 views1 answer
Tint image with background color css
CSS
0 vote240 views1 answer
Css media query overflow
CSS