<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>
<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>
Result
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