const names = ['John', 'Paul', 'George', 'Ringo', 'John'];
let unique = [...new Set(names)];
console.log(unique); // 'John', 'Paul', 'George', 'Ringo'// for TypeScript and JavaScript
const initialArray = ['a', 'a', 'b',]
finalArray = Array.from(new Set(initialArray)); // a, bconst numbers = [1 , 21, 21, 34 ,12 ,34 ,12];
const removeRepeatNumbers = array => [... new Set(array)]
removeRepeatNumbers(numbers) // [ 1, 21, 34, 12 ]function toUniqueArray(a){
var newArr = [];
for (var i = 0; i < a.length; i++) {
if (newArr.indexOf(a[i]) === -1) {
newArr.push(a[i]);
}
}
return newArr;
}
var colors = ["red","red","green","green","green"];
var colorsUnique=toUniqueArray(colors); // ["red","green"]uniqueArray = a.filter(function(item, pos) {
return a.indexOf(item) == pos;
})
//Other Mathod using Foreach and includes
let chars = ['A', 'B', 'A', 'C', 'B'];
let uniqueChars = [];
chars.forEach((c) => {
if (!uniqueChars.includes(c)) {
uniqueChars.push(c);
}
});
console.log(uniqueChars);