<html>
<body>
<script type="text/javascript">
var arr = new Array(3);
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"
document.write(arr.join());
document.write("<br />");
document.write(arr.join("."));
</script>
</body>
</html>
结果:
George,John,Thomas
George.John.Thomas
标签:arr,John,join,Thomas,js,write,字符串,document
From: https://blog.51cto.com/u_16179085/6663499