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 +"
")
document.write("1 is boolean "+ b2 +"
")
document.write("An empty string is boolean "+ b3 + "
")
document.write("null is boolean "+ b4+ "
")
document.write("NaN is boolean "+ b5 +"
")
document.write("The string 'false' is boolean "+ b6 +"
")