test = () => {
var data = [1, 2, 3, 4];
var arrayOfSquares = data.map(function(item) {
return item * item;
});
console.log(arrayOfSquares);
};
test = () => {
var data = [0, 1, 2, 3];
var arrayFilter = data.filter(function(item) {
return item>1;
});
console.log(arrayFilter);