1,HTML source code£º
<![CDATA[
<html>
<head>
<title>How to use Character</title>
</head>
<body>
<script src="jsjava.js"></script>
<script>
var lc=Character.toLowerCase('B');
document.write("The lower case of B is:"+lc+"<br>");
var flag=Character.checkValid("_");
document.write(flag);
</script>
</body>
</html>
]]>
2,The display:
The lower case of B is:B
true