This article describes the JS method of exchanging variables. Share it for your reference. The specific implementation method is as follows:
The code copy is as follows:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript">
function jh(arr) {
for (var i = 0; i < arr.length / 2; i++) {
var tem = arr[i];
arr[i] = arr[arr.length -i - 1];
arr[arr.length -i - 1] = tem;
}
}
var names = new Array();
names[1] = "tom";
names[2] = "lily";
names[3] = "jek";
jh(names);
alert(names);
</script>
</head>
<body>
</body>
</html>
I hope this article will be helpful to everyone's JavaScript programming.