传智黑马39期WEB前端教程-JavaScript基础语法-JavaScript数组及应用-翻转数组

翻转数组

var numbers = [4, 5, 7, 9];
var newArray = [];
for (var i = numbers.length - 1; i >= 0; i--) {
    newArray[newArray.length] = numbers[i];
}
console.log(newArray);