document.write("isNaN(NaN) = " + isNaN(NaN) + "<br />");
document.write("isNaN({}) = " + isNaN({}) + "<br />");
document.write("isNaN(undefined) = " + isNaN(undefined) + "<br />");
document.write("isNaN(true) = " + isNaN(true) + "<br />");
document.write("isNaN(null) = " + isNaN(null) + "<br />");
document.write("isNaN(100) = " + isNaN(100) + "<br />");
document.write('isNaN("100") = ' + isNaN("100") + "<br />");
document.write("isNaN(3.14) = " + isNaN(3.14) + "<br />");
document.write('isNaN("3.14") = ' + isNaN("3.14") + "<br />");
document.write('isNaN("300F") = ' + isNaN("300F") + "<br />");
document.write('isNaN("") = ' + isNaN("") + "<br />");
document.write('isNaN(" ") = ' + isNaN(" ") + "<br />");
document.write('isNaN(new Date()) = ' + isNaN(new Date()) + "<br />");
document.write('isNaN(new Date().toString()) = ' + isNaN(new Date().toString()) + "<br />");
document.write('isNaN("FFFF") = ' + isNaN("FFFF") + "<br />");
document.write('isNaN("xyz") = ' + isNaN("xyz") + "<br />");
/*
run
isNaN(NaN) = true
isNaN({}) = true
isNaN(undefined) = true
isNaN(true) = false
isNaN(null) = false
isNaN(100) = false
isNaN("100") = false
isNaN(3.14) = false
isNaN("3.14") = false
isNaN("300F") = true
isNaN("") = false
isNaN(" ") = false
isNaN(new Date()) = false
isNaN(new Date().toString()) = true
isNaN("FFFF") = true
isNaN("xyz") = true
*/
