<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>反转数组</title>
</head>
<body>
<script type="text/javascript">
var arr = [1,2,3,4,5,6,7,8];
for(var i = 0;i < arr.length/2;i++){
//借助第三方变量交换两个变量的值
var temp = arr[i];
arr[i] = arr[arr.length-1-i];
arr[arr.length-1-i] = temp;
}
console.log(arr);
</script>
</body>
</html>
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