1,HTML source code£º
<![CDATA[
<html>
<head>
<title>How to use HashSet</title>
</head>
<body>
<script src="jsjava.js"></script>
<script>
var s=new HashSet();
var a=["a","b","a","b","c"];
s.add(a);
document.write(s);
</script>
</body>
</html>
]]>
2,The display:
a,b,a,b,c