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js delete duplicates from array

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

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

removing duplicates in array javascript

let arr = [1,2,3,1,1,1,4,5]
    
let filtered = arr.filter((item,index) => arr.indexOf(item) === index)
    
 console.log(filtered) // [1,2,3,4,5]
Comment

javascript remove duplicates

var arr = ["apple", "mango", "apple", "orange", "mango", "mango"];
  
function removeDuplicates(arr) {
	return arr.filter((item, 
		index) => arr.indexOf(item) === index);
}
  
console.log(removeDuplicates(arr)); // ["apple", "mango", "orange"]
Comment

how to remove duplicates from array in javascript

// how to remove duplicates from array in javascript
// 1. filter()
let num = [1, 2, 3, 3, 4, 4, 5, 5, 6];
let filtered = num.filter((a, b) => num.indexOf(a) === b)
console.log(filtered);
// Result: [ 1, 2, 3, 4, 5, 6 ]

// 2. Set()
const removeDuplicates = (arr) => [...new Set(arr)];
console.log(removeDuplicates([1, 2, 3, 3, 4, 4, 5, 5, 6]));
// Result: [ 1, 2, 3, 4, 5, 6 ]
Comment

javascript remove duplicate letters in a string

function removeDuplicateCharacters(string) {
  return string
    .split('')
    .filter(function(item, pos, self) {
      return self.indexOf(item) == pos;
    })
    .join('');
}
console.log(removeDuplicateCharacters('baraban'));
Comment

javascript remove duplicated from Array

const removeDuplicates = (arr) => [...new Set(arr)];

console.log(removeDuplicates([1, 2, 3, 3, 4, 4, 5, 5, 6]));
// Result: [ 1, 2, 3, 4, 5, 6 ]
Comment

remove the duplicate character in string js

function removeDuplicate(str, letSingleChar = false)  {
    let string = str;
    for (element of string) {
        const re = new RegExp(element, 'g');
        if (string.match(re)?.length > 1) {
          if (letSingleChar == true) {
            string = [...new Set(string.split(''))].join('');
          } else 
            string = string.replace(re, '');
        }
    }
    return string;
} 

console.log(removeDuplicate("Hello World", true)) // Helo Wrd
console.log(removeDuplicate("Hello World", false )) // He Wrd
Comment

remove duplicates from array js

const myArray = [2,5,6,2,2,4,5,3,3];

const uniqueArray = [...new Set(myArray)];

console.log(uniqueArray);
Comment

javascript to remove duplicates from an array

uniqueArray = a.filter(function(item, pos) {
    return a.indexOf(item) == pos; 
})
Comment

javascript remove duplicates from array

var myArr = [1, 2, 2, 2, 3];
var mySet = new Set(myArr);
myArr = [...mySet];
console.log(myArr);
// 1, 2, 3
Comment

javascript remove duplicates from array

unique = [...new Set(arr)];   // where arr contains duplicate elements
Comment

how to remove duplicates in array in javascript

const numbers = [1 , 21, 21, 34 ,12 ,34 ,12];
const removeRepeatNumbers = array => [... new Set(array)]
removeRepeatNumbers(numbers) // [ 1, 21, 34, 12 ]
Comment

javascript remove duplicates from array

// for TypeScript and JavaScript
const initialArray = ['a', 'a', 'b',]
finalArray = Array.from(new Set(initialArray)); // a, b
Comment

javascript to remove duplicates from an array

uniqueArray = a.filter(function(item, pos) {
    return a.indexOf(item) == pos;
})
Comment

how to remove duplicates in js array

let arr = [1, 2, 3, 4, 3, 3, 3]

console.log([...new Set(arr)])
// (4) [1, 2, 3, 4]

let arr = [1, 2, 3, 4, 3, 3, 3, 'foo', true]

console.log([...new Set(arr)])
//(6) [1, 2, 3, 4, 'foo', true]
Comment

remove duplicates from array javascript

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']
Comment

Remove Duplicates array values in javascript

const array  = [5,4,7,8,9,2,7,5];
array.filter((item,idx,arr) => arr.indexOf(item) === idx);
// or
const nonUnique = [...new Set(array)];
// Output: [5, 4, 7, 8, 9, 2]
Comment

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'
Comment

Javascript removing duplicates in array

const array = [1, 1, 2, 3, 5, 5, 1]
const uniqueArray = [...new Set(array)];

console.log(uniqueArray); // Output: [1, 2, 3, 5]
Comment

javascript remove duplicates

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

remove duplicates in an Array in Javascript

let chars = ['A', 'B', 'A', 'C', 'B'];
let uniqueChars = [...new Set(chars)];

console.log(uniqueChars);
Comment

JavaScript remove duplicate items

function onlyUnique(value, index, self) {
  return self.indexOf(value) === index;
}

// usage example:
let a = ['a', 1, 'a', 2, '1'];
let unique = a.filter(onlyUnique);

console.log(unique); // ['a', 1, 2, '1']
Comment

remove duplicates from array javascript

[...new Set(array)]
Comment

remove duplicates from array javascript

arr.filter((v,i,a)=>a.findIndex(t=>(t.place === v.place && t.name===v.name))===i)
Comment

remove duplicates javascript

function withoutDuplicates (arr) {
  return [...new Set(arr)];
}
Comment

removing duplicates from array javascript

var names = ["Mike","Matt","Nancy","Adam","Jenny","Nancy","Carl"];
var uniqueNames = [];
$.each(names, function(i, el){
    if($.inArray(el, uniqueNames) === -1) uniqueNames.push(el);
});
Comment

how to remove duplicate values in array javascript

var car = ["Saab","Volvo","BMW","Saab","BMW",];
var cars = [...new Set(car)]
document.getElementById("demo").innerHTML = cars;
Comment

javascript remove duplicates from array

let chars = ['A', 'B', 'A', 'C', 'B'];
let uniqueChars = [...new Set(chars)];

console.log(uniqueChars);
Code language: JavaScript (javascript)
Comment

remove duplicate values from string in javascript

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

let unique = [...new Set(names)];
console.log(unique); 
Comment

remove duplicate name from array javascript

const allNames = ['Nathan', 'Clara ', 'Nathan', 'Fowler', 'Mitchell', 'Fowler', 'Clara ', 'Drake', 'Fowler', 'Clyde ', 'Mitchell', 'Clyde '];

function checkName(names) {
  const uniqueName = [];
  for (let i = 0; i < names.length; i++) {
    const nameIndex = names[i];
    if (uniqueName.includes(nameIndex) == false) {
      uniqueName.push(nameIndex);
    }
  }
  return uniqueName;
}

const uniqueNames = checkName(allNames);
console.log(uniqueNames);
Comment

how to remove duplicates in js

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

let unique = [...new Set(names)];
console.log(unique);
Comment

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