<html>
<body>
<script type="text/javascript">
var b1=new Boolean( 0)
var b2=new Boolean(1)
var b3=new Boolean("")
var b4=new Boolean(null)
var b5=new Boolean(NaN)
var b6=new Boolean("false")
document.write("0 is boolean "+ b1 +"<br>")
document.write("1 is boolean "+ b2 +"<br>")
document.write("An empty string is boolean "+ b3 + "<br>")
document.write("null is boolean "+ b4+ "<br>")
document.write("NaN is boolean "+ b5 +"<br>")
document.write("The string "false" is boolean "+ b6 +"<br>")
</script>
</body>
</html>