<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>字符串反转</title>
</head>
<body>
<script>
function reverStr(param) { //jparam形参
var arr = param.split(""); //分割数组
var newArr = [];
for (i = 0; i < arr.length; i++) { //利用for循环实现数据位置调换
newArr[arr.length - i] = arr[i];
}
return newStr = newArr.join('') //返回并赋值给newStr
}
var oldstr =reverStr('1234567')
console.log(newStr)
</script>
</body>
</html>