how to get unique elements from an array in javascript code example

Example 1: javascript array unique values

var arr = [55, 44, 65,1,2,3,3,34,5];
var unique = [...new Set(arr)]

//just  var unique = new Set(arr) wont be an array

Example 2: unique elements in array javascript

var array3 = [1, 2, 4, 6, 1, 4, 9, 10, 2, 8];
function findUniqueElements_3(array) {

    for (let i = 0; i < array.length; i++) {
        for (let j = i + 1; j < array.length; j++) {
            if (array[i] == array[j]) {
                array.splice(j, 1)
            }

        }
    }
    console.log(`from third way : ${array}`);
}

findUniqueElements_3(array3)