var numbers = [1,2,3,4,5,4,3,2,1];
var everyResult = numbers.every(function(item, index, array) {
return (item > 2);
});
console.log(everyResult);
var someResult = numbers.some(function(item, index, array) {
return (item > 2);
});
console.log(someResult);
var filterResult = numbers.filter(function(item, index, array) {
return (item > 2);
});
console.log(filterResult);
var mapResult = numbers.map(function(item, index, array) {
return item * 10;
});
console.log(mapResult);
var sum = 0;
numbers.forEach(function(item, index, array) {
sum += item;
console.log(sum);
});
console.log(feResult);
console