Example 1: js delete duplicates from array
const names = ['John', 'Paul', 'George', 'Ringo', 'John'];
let unique = [...new Set(names)];
console.log(unique); // 'John', 'Paul', 'George', 'Ringo'
Example 2: javascript remove duplicates from array
unique = [...new Set(arr)]; // where arr contains duplicate elements
Example 3: 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 ]
Example 4: remove duplicates array javascript
var data = [1, 2, 'Peter', 3, 3,'Peter', 2, 2, 1, 2, 3, 4, 4, 5, 4];
var unique = data.filter((v, i, a) => a.indexOf(v) === i);
Example 5: remove duplicate value from array
let chars = ['A', 'B', 'A', 'C', 'B'];
let uniqueChars = [...new Set(chars)];
console.log(uniqueChars);