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]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]javascript remove duplicates from array
// for TypeScript and JavaScript
const initialArray = ['a', 'a', 'b',]
finalArray = Array.from(new Set(initialArray)); // a, bhow 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 ]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']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);
});use set to remove duplicates in javascript
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'Copyright © 2021 Codeinu
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