<html><body><script>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>