// 将数组[ 'red', 'green', 'blue', 'pink ', " purple"]的内容反过来存放
// 1、声明一个新数组newArr
//2、把旧数组索引号第4个取过来(arr.length - 1),给新数组索引号第0个元素(newArr.length)
// 3、我们采取递减的方式i--
<script>
var arr = ["red", "green", "blue", "pink ", " purple"];
var newArr = [];
for (var i = arr.length - 1; i >= 0; i--) {
newArr[newArr.length] = arr[i];
}
console.log(newArr);
</script>